{"title":"Stroker Kit","description":null,"products":[{"product_id":"nitto-2-2l-stroker-kit-mitsubishi-4b11-evo-x","title":"Nitto 2.2L Stroker Kit — Mitsubishi 4B11 Evo X","description":"\u003cp\u003eComplete Nitto 2.2-litre rotating-assembly package for Mitsubishi 4B11 Evo X builds.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNitto\/CP forged pistons\u003c\/li\u003e\n\u003cli\u003eH-beam or I-beam 143.75 mm connecting rods\u003c\/li\u003e\n\u003cli\u003e93 mm 4340 billet crankshaft\u003c\/li\u003e\n\u003cli\u003eChoice of 86.5 mm or 87.0 mm bore\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eChoose the rod design and bore that match the engine build. Final machining, clearances and assembly must be completed by a qualified engine builder.\u003c\/p\u003e","brand":"Nitto","offers":[{"title":"H-Beam \/ 86.5 mm","offer_id":67839900057920,"sku":"NIT-STK-4B11H865","price":5895.0,"currency_code":"AUD","in_stock":true},{"title":"H-Beam \/ 87.0 mm","offer_id":67839900090688,"sku":"NIT-STK-4B11H87","price":5895.0,"currency_code":"AUD","in_stock":true},{"title":"I-Beam \/ 86.5 mm","offer_id":67839900123456,"sku":"NIT-STK-4B11I865","price":6275.0,"currency_code":"AUD","in_stock":true},{"title":"I-Beam \/ 87.0 mm","offer_id":67839900156224,"sku":"NIT-STK-4B11I87","price":6275.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/nitto-4b11-hbeam-stroker-kit.png?v=1792659264"},{"product_id":"nitto-stroker-kit-nissan-rb26","title":"Nitto Stroker Kit — Nissan RB26","description":"\u003cp\u003eComplete Nitto rotating-assembly packages for Nissan RB26 2.7-litre and 2.8-litre engine builds.\u003c\/p\u003e\u003cp\u003eVariants combine the matching forged pistons, I-beam connecting rods and billet crankshaft. Select capacity, bore and journal specification with the engine builder before ordering.\u003c\/p\u003e","brand":"Nitto","offers":[{"title":"2.7L Standard Journal I-Beam \/ 86.5 mm","offer_id":67840002097472,"sku":"NIT-STK-RB26I27865","price":10370.0,"currency_code":"AUD","in_stock":true},{"title":"2.7L Standard Journal I-Beam \/ 87.0 mm","offer_id":67840002130240,"sku":"NIT-STK-RB26I2787","price":10370.0,"currency_code":"AUD","in_stock":true},{"title":"2.8L Standard Journal I-Beam \/ 86.5 mm","offer_id":67840002163008,"sku":"NIT-STK-RB26I28865","price":10370.0,"currency_code":"AUD","in_stock":true},{"title":"2.8L Standard Journal I-Beam \/ 87.0 mm","offer_id":67840002195776,"sku":"NIT-STK-RB26I2887","price":10370.0,"currency_code":"AUD","in_stock":true},{"title":"2.8L Wide Journal V2 I-Beam \/ 86.5 mm","offer_id":67840002228544,"sku":"NIT-STK-RB26IWD865","price":11430.0,"currency_code":"AUD","in_stock":true},{"title":"2.8L Wide Journal V2 I-Beam \/ 87.0 mm","offer_id":67840002261312,"sku":"NIT-STK-RB26IWD87","price":11430.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/nitto-rb26-stroker-kits.png?v=1792659482"},{"product_id":"nitto-2-2l-stroker-kit-nissan-sr20","title":"Nitto 2.2L Stroker Kit — Nissan SR20","description":"\u003cp\u003eNitto 2.2-litre stroker-kit options for Nissan SR20 engine builds, available with H-beam or I-beam connecting rods and 86.5 mm or 87.0 mm bore specifications.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eSR20 engine family, including common Silvia S13, S14 and S15 applications. Engine machining, clearances and final component suitability must be confirmed by the engine builder before assembly.\u003c\/p\u003e\u003ch3\u003eAvailable configurations\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eH-beam or I-beam connecting rods\u003c\/li\u003e\n\u003cli\u003e86.5 mm or 87.0 mm bore\u003c\/li\u003e\n\u003cli\u003e2.2-litre stroker configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBuild check:\u003c\/strong\u003e Confirm compression target, cylinder bore, head and block specification, bearing choice and intended power\/use before ordering.\u003c\/p\u003e","brand":"Nitto Performance Engineering","offers":[{"title":"H-Beam \/ 86.5 mm","offer_id":67840417628480,"sku":"NIT-STK-SR20H865","price":5895.0,"currency_code":"AUD","in_stock":true},{"title":"H-Beam \/ 87.0 mm","offer_id":67840417661248,"sku":"NIT-STK-SR20H87","price":5895.0,"currency_code":"AUD","in_stock":true},{"title":"I-Beam \/ 86.5 mm","offer_id":67840417694016,"sku":"NIT-STK-SR20I865","price":6275.0,"currency_code":"AUD","in_stock":true},{"title":"I-Beam \/ 87.0 mm","offer_id":67840417726784,"sku":"NIT-STK-SR20I87","price":6275.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/nitto-sr20-22l-h-beam-stroker-kit.png?v=1792660551"},{"product_id":"nitto-stroker-kit-mitsubishi-4g63-evo-4-9","title":"Nitto Stroker Kit — Mitsubishi 4G63 Evo 4–9","description":"\u003cp\u003eNitto stroker-kit options for Mitsubishi 4G63 engine builds, covering 2.2-litre and 2.3-litre configurations with H-beam or I-beam connecting rods and 85.5 mm or 86.0 mm bore specifications.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003e4G63 seven-bolt engine applications commonly used in Mitsubishi Evolution 4–9. Engine machining, clearances and final component suitability must be confirmed by the engine builder before assembly.\u003c\/p\u003e\u003ch3\u003eAvailable configurations\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2.2-litre or 2.3-litre capacity\u003c\/li\u003e\n\u003cli\u003eH-beam or I-beam connecting rods\u003c\/li\u003e\n\u003cli\u003e85.5 mm or 86.0 mm bore\u003c\/li\u003e\n\u003cli\u003eEN40B crank specification in the supplied price list\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBuild check:\u003c\/strong\u003e Confirm the exact engine version, cylinder bore, compression target, bearing choice and intended power\/use before ordering.\u003c\/p\u003e","brand":"Nitto Performance Engineering","offers":[{"title":"2.2L \/ H-Beam \/ 85.5 mm","offer_id":67840422248768,"sku":"NIT-STK-4G63H22855","price":6555.0,"currency_code":"AUD","in_stock":true},{"title":"2.2L \/ H-Beam \/ 86.0 mm","offer_id":67840422281536,"sku":"NIT-STK-4G63H2286","price":6555.0,"currency_code":"AUD","in_stock":true},{"title":"2.2L \/ I-Beam \/ 85.5 mm","offer_id":67840422314304,"sku":"NIT-STK-4G63I22855","price":6935.0,"currency_code":"AUD","in_stock":true},{"title":"2.2L \/ I-Beam \/ 86.0 mm","offer_id":67840422347072,"sku":"NIT-STK-4G63I2286","price":6935.0,"currency_code":"AUD","in_stock":true},{"title":"2.3L \/ H-Beam \/ 85.5 mm","offer_id":67840422379840,"sku":"NIT-STK-4G63H23855","price":6555.0,"currency_code":"AUD","in_stock":true},{"title":"2.3L \/ H-Beam \/ 86.0 mm","offer_id":67840422412608,"sku":"NIT-STK-4G63H2386","price":6555.0,"currency_code":"AUD","in_stock":true},{"title":"2.3L \/ I-Beam \/ 85.5 mm","offer_id":67840422445376,"sku":"NIT-STK-4G63I23855","price":6935.0,"currency_code":"AUD","in_stock":true},{"title":"2.3L \/ I-Beam \/ 86.0 mm","offer_id":67840422478144,"sku":"NIT-STK-4G63I2386","price":6935.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/nitto-4g63-22l-h-beam-stroker-kit.png?v=1792660566"},{"product_id":"roger-clark-motorsport-omega-piston-ring-set-92-00mm-suit-2-1-stroker-kit-79mm-stroke-crankshaft-rcm2375","title":"Roger Clark Motorsport Omega Piston \u0026 Ring Set 92.00mm- Suit 2.1 Stroker Kit\/79mm Stroke Crankshaft RCM2375","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-omega-piston-ring-set-92.00mm-2.1-stroker-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003eRCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you don?t get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  After discussions with the technical people at Omega and other metallurgists we are convinced that the companies who are promoting fully machined pistons cannot offer forgings, it is much easier and cheaper to buy a machine with 3D capabilities than it is to buy and set up a forging plant, then there is the experience and skill required to create the perfect forging, it isn't easy, and certainly isn?t cheap but it provides the very best components available.  Omega?s attention to detail?  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5?C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5?C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Proven Performance!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you don?t get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldn?t look anywhere else.  \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-omega-piston-ring-set-92.00mm-2.1-stroker-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67902560600384,"sku":"RCM2375","price":1773.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2375.jpg?v=1793261066"},{"product_id":"roger-clark-motorsport-2-1-forged-stroker-kit-92-50mm-rcm2345","title":"Roger Clark Motorsport 2.1 Forged Stroker Kit 92.50mm RCM2345","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-forged-stroker-kit-92.50mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003ePower, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit.  When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building  a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:  ¥ Subaru EJ25 Heat Treated Crankshaft  Manufactured by FHI Japan the Subaru Forged Crankshaft is a strong, reliable and proven component. The crank is induction hardened to be extremely resilient to wear and provides a great foundation for any performance engine.  ¥ RCM \/ Omega Forged Piston Set  RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you donÕt get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5¡C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5¡C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you donÕt get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldnÕt look anywhere else.  ¥ RCM \/ Arrow H Section Connecting Rod Set  Quality. Innovation. Performance. The hallmarks of Arrow Precision. Only the highest quality raw materials, the latest methods and the knowledge of superbly skilled designers and engineers goes into the making of every Arrow Precision Connecting Rod. The high strength RCM H Section Connecting Rod is carefully and precisely manufactured by these very craftsmen using a low sulphur Vacuum de-gassed nickel chrome alloy steel called EN24 in ÒV conditionÓ, with a pined surface finish. Each rod is ultrasonically tested, crack detected and balanced to within a gram of each other before finally receiving the RCM seal of quality in the form of our laser engraved logo.  ¥ ACL Race Bearings  Used the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:  ¥ High strength overlay plate with reduced thickness for improved fatigue properties ¥ Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. ¥ Increased crush for improved bearing retention ¥ Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. ¥ Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. ¥ 3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. ¥ Tight consistent wall tolerances to help you maintain consistent clearances. ¥ Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.  ¥ Engine Block Gasket Kit \u0026amp; Sealer  Included in our stroker kits are the necessary engine short block seals and relevant sealer to ensure you have everything to hand when installing our storker kit. All our gaskets are Genuine Subaru ensuring quality, exact fitment and of course reliability. \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-forged-stroker-kit-92.50mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67903048778048,"sku":"RCM2345","price":6234.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2345.jpg?v=1793264418"},{"product_id":"roger-clark-motorsport-omega-piston-ring-set-92-50mm-suit-2-1-stroker-kit-79mm-stroke-crankshaft-rcm2368","title":"Roger Clark Motorsport Omega Piston \u0026 Ring Set 92.50mm- Suit 2.1 Stroker Kit\/79mm Stroke Crankshaft RCM2368","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-omega-piston-ring-set-92.50mm-2.1-stroker-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003eRCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you don?t get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  After discussions with the technical people at Omega and other metallurgists we are convinced that the companies who are promoting fully machined pistons cannot offer forgings, it is much easier and cheaper to buy a machine with 3D capabilities than it is to buy and set up a forging plant, then there is the experience and skill required to create the perfect forging, it isn't easy, and certainly isn?t cheap but it provides the very best components available.  Omega?s attention to detail?  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5?C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5?C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Proven Performance!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you don?t get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldn?t look anywhere else.  \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-omega-piston-ring-set-92.50mm-2.1-stroker-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67903050023232,"sku":"RCM2368","price":1773.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2368.jpg?v=1793264446"},{"product_id":"roger-clark-motorsport-2-1-budget-street-forged-stroker-kit-92-25mm-rcm2342","title":"Roger Clark Motorsport 2.1 Budget Street Forged Stroker Kit 92.25mm RCM2342","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-street-forged-stroker-kit-92.25mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003ePower, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit.  When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building  a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:  Ç Subaru EJ25 Heat Treated Crankshaft  Manufactured by FHI Japan the Subaru Forged Crankshaft is a strong, reliable and proven component. The crank is induction hardened to be extremely resilient to wear and provides a great foundation for any performance engine.  Ç RCM \/ Omega Forged Piston Set  RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you don?t get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5?C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5?C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you don?t get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldn?t look anywhere else.  Ç Manley Conrod Set  Manley H-Beams are not only very \"economically\" priced, but they are finished to the same exacting tolerances and high quality standards as their more expensive Sportsmasterå and Pro Series rods. Final hone size, thread detail, bend and twist are all attributes found in a Manley Conrod.    Ç ACL Race Bearings  Used the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:  Ç High strength overlay plate with reduced thickness for improved fatigue properties Ç Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. Ç Increased crush for improved bearing retention Ç Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. Ç Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. Ç 3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. Ç Tight consistent wall tolerances to help you maintain consistent clearances. Ç Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-street-forged-stroker-kit-92.25mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67903051366720,"sku":"RCM2342","price":4568.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2342.jpg?v=1793264456"},{"product_id":"roger-clark-motorsport-2-1-budget-street-forged-stroker-kit-92-50mm-rcm2343","title":"Roger Clark Motorsport 2.1 Budget Street Forged Stroker Kit 92.50mm RCM2343","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-street-forged-stroker-kit-92.50mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\"Power, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit.  When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building  a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:  Ç Subaru EJ25 Heat Treated Crankshaft  Manufactured by FHI Japan the Subaru Forged Crankshaft is a strong, reliable and proven component. The crank is induction hardened to be extremely resilient to wear and provides a great foundation for any performance engine.  Ç RCM \/ Omega Forged Piston Set  RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you don?t get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5?C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5?C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you don?t get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldn?t look anywhere else.  Ç Manley Conrod Set  Manley H-Beams are not only very \"\"economically\"\" priced, but they are finished to the same exacting tolerances and high quality standards as their more expensive Sportsmasterå and Pro Series rods. Final hone size, thread detail, bend and twist are all attributes found in a Manley Conrod.    Ç ACL Race Bearings  Used the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:  Ç High strength overlay plate with reduced thickness for improved fatigue properties Ç Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. Ç Increased crush for improved bearing retention Ç Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. Ç Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. Ç 3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. Ç Tight consistent wall tolerances to help you maintain consistent clearances. Ç Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.\"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-street-forged-stroker-kit-92.50mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67903056707904,"sku":"RCM2343","price":4568.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2343.jpg?v=1793264482"},{"product_id":"roger-clark-motorsport-2-1-billet-stroker-kit-92-25mm-rcm2346","title":"Roger Clark Motorsport 2.1 Billet Stroker Kit 92.25mm RCM2346","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-forged-stroker-kit-93.00mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003ePower, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit.  When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building  a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:  ¥ Subaru EJ25 Heat Treated Crankshaft  Manufactured by FHI Japan the Subaru Forged Crankshaft is a strong, reliable and proven component. The crank is induction hardened to be extremely resilient to wear and provides a great foundation for any performance engine.  ¥ RCM \/ Omega Forged Piston Set  RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you donÕt get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5¡C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5¡C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you donÕt get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldnÕt look anywhere else.  ¥ RCM \/ Arrow H Section Connecting Rod Set  Quality. Innovation. Performance. The hallmarks of Arrow Precision. Only the highest quality raw materials, the latest methods and the knowledge of superbly skilled designers and engineers goes into the making of every Arrow Precision Connecting Rod. The high strength RCM H Section Connecting Rod is carefully and precisely manufactured by these very craftsmen using a low sulphur Vacuum de-gassed nickel chrome alloy steel called EN24 in ÒV conditionÓ, with a pined surface finish. Each rod is ultrasonically tested, crack detected and balanced to within a gram of each other before finally receiving the RCM seal of quality in the form of our laser engraved logo.  ¥ ACL Race Bearings  Used the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:  ¥ High strength overlay plate with reduced thickness for improved fatigue properties ¥ Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. ¥ Increased crush for improved bearing retention ¥ Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. ¥ Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. ¥ 3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. ¥ Tight consistent wall tolerances to help you maintain consistent clearances. ¥ Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.  ¥ Engine Block Gasket Kit \u0026amp; Sealer  Included in our stroker kits are the necessary engine short block seals and relevant sealer to ensure you have everything to hand when installing our storker kit. All our gaskets are Genuine Subaru ensuring quality, exact fitment and of course reliability. \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-forged-stroker-kit-93.00mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67903056838976,"sku":"RCM2346","price":15211.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2346.jpg?v=1793264485"},{"product_id":"roger-clark-motorsport-2-1-budget-street-forged-stroker-kit-93-00mm-rcm2738","title":"Roger Clark Motorsport 2.1 Budget Street Forged Stroker Kit 93.00mm RCM2738","description":"\u003cp\u003e\"Power, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit. When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eSubaru EJ25 Heat Treated Crankshaft \u003c\/strong\u003e\u003c\/p\u003e  \u003cp\u003eManufactured by FHI Japan the Subaru Forged Crankshaft is a strong, reliable and proven component. The crank is induction hardened to be extremely resilient to wear and provides a great foundation for any performance engine.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eRCM \/ Omega Forged Piston Set \u003c\/strong\u003e\u003c\/p\u003e  \u003cp\u003eRCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eSo why forged? \u003c\/strong\u003e\u003c\/p\u003e  \u003cp\u003eA forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you don?t get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.\u003c\/p\u003e  \u003cp\u003eCNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5?C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5?C conditions are replicated.\u003c\/p\u003e  \u003cp\u003eThe piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!\u003c\/p\u003e  \u003cp\u003eAll RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!\u003c\/p\u003e  \u003cp\u003eBoth Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you don?t get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldn?t look anywhere else.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eManley Conrod Set \u003c\/strong\u003e\u003c\/p\u003e  \u003cp\u003eManley H-Beams are not only very \"\"economically\"\" priced, but they are finished to the same exacting tolerances and high quality standards as their more expensive Sportsmasterå and Pro Series rods. Final hone size, thread detail, bend and twist are all attributes found in a Manley Conrod.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eACL Race Bearings \u003c\/strong\u003e\u003c\/p\u003e  \u003cp\u003eUsed the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eHigh strength overlay plate with reduced thickness for improved fatigue properties\u003c\/li\u003e \t\u003cli\u003eHardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.\u003c\/li\u003e \t\u003cli\u003eIncreased crush for improved bearing retention\u003c\/li\u003e \t\u003cli\u003eElimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing.\u003c\/li\u003e \t\u003cli\u003eIncreased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.\u003c\/li\u003e \t\u003cli\u003e3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings.\u003c\/li\u003e \t\u003cli\u003eTight consistent wall tolerances to help you maintain consistent clearances.\u003c\/li\u003e \t\u003cli\u003eEnlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.\u003c\/li\u003e \u003c\/ul\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67903058411840,"sku":"RCM2738","price":4568.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2738.jpg?v=1793264512"},{"product_id":"roger-clark-motorsport-omega-piston-ring-set-92-25mm-suit-2-1-stroker-kit-79mm-stroke-crankshaft-rcm2367","title":"Roger Clark Motorsport Omega Piston \u0026 Ring Set 92.25mm- Suit 2.1 Stroker Kit\/79mm Stroke Crankshaft RCM2367","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-omega-piston-ring-set-92.25mm-2.1-stroker-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003eRCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you don?t get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  After discussions with the technical people at Omega and other metallurgists we are convinced that the companies who are promoting fully machined pistons cannot offer forgings, it is much easier and cheaper to buy a machine with 3D capabilities than it is to buy and set up a forging plant, then there is the experience and skill required to create the perfect forging, it isn't easy, and certainly isn?t cheap but it provides the very best components available.  Omega?s attention to detail?  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5?C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5?C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Proven Performance!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you don?t get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldn?t look anywhere else.  \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-omega-piston-ring-set-92.25mm-2.1-stroker-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67907707928896,"sku":"RCM2367","price":1773.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2367.jpg?v=1793316463"},{"product_id":"roger-clark-motorsport-omega-piston-ring-set-93-00mm-suit-2-1-stroker-kit-79mm-stroke-crankshaft-rcm2547","title":"Roger Clark Motorsport Omega Piston \u0026 Ring Set 93.00mm- Suit 2.1 Stroker Kit\/79mm Stroke Crankshaft RCM2547","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-omega-piston-ring-set-93.00mm-2.1-stroker-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003eRCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you don?t get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  After discussions with the technical people at Omega and other metallurgists we are convinced that the companies who are promoting fully machined pistons cannot offer forgings, it is much easier and cheaper to buy a machine with 3D capabilities than it is to buy and set up a forging plant, then there is the experience and skill required to create the perfect forging, it isn't easy, and certainly isn?t cheap but it provides the very best components available.  Omega?s attention to detail?  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5?C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5?C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Proven Performance!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you don?t get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldn?t look anywhere else.  \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-omega-piston-ring-set-93.00mm-2.1-stroker-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67907710615872,"sku":"RCM2547","price":1773.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2547.jpg?v=1793316501"},{"product_id":"roger-clark-motorsport-2-1-billet-stroker-kit-92-50mm-rcm2347","title":"Roger Clark Motorsport 2.1 Billet Stroker Kit 92.50mm RCM2347","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-billet-stroker-kit-92.50mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003ePower, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit.  When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building  a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:  ¥ RCM \/ Arrow 79mm Billet Crankshaft  Quality. Innovation. Performance. The hallmarks of Arrow Precision. Only the highest quality raw materials, the latest methods and the knowledge of superbly skilled designers and engineers goes into the making of every Arrow Precision part.  Engineering precision detailed cranks begins with only the highest quality materials and a flexible batch manufacturing process. Arrow Precision works to exacting standards creating a Subaru crankshaft reverse engineered to stunning perfection. This is achieved through continuous inward investment in skilled, experienced people and working practices. Accuracy and efficiency are the hallmarks of a precision crank shaft ensuring you the strongest, lightest and most reliable crank available.  ¥ RCM \/ Omega Forged Piston Set  RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you donÕt get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5¡C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5¡C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you donÕt get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldnÕt look anywhere else.  ¥ RCM \/ Arrow H Section Connecting Rod Set  Quality. Innovation. Performance. The hallmarks of Arrow Precision. Only the highest quality raw materials, the latest methods and the knowledge of superbly skilled designers and engineers goes into the making of every Arrow Precision Connecting Rod. The high strength RCM H Section Connecting Rod is carefully and precisely manufactured by these very craftsmen using a low sulphur Vacuum de-gassed nickel chrome alloy steel called EN24 in ÒV conditionÓ, with a pined surface finish. Each rod is ultrasonically tested, crack detected and balanced to within a gram of each other before finally receiving the RCM seal of quality in the form of our laser engraved logo.  ¥ ACL Race Bearings  Used the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:  ¥ High strength overlay plate with reduced thickness for improved fatigue properties ¥ Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. ¥ Increased crush for improved bearing retention ¥ Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. ¥ Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. ¥ 3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. ¥ Tight consistent wall tolerances to help you maintain consistent clearances. ¥ Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.  ¥ Engine Block Gasket Kit \u0026amp; Sealer  Included in our stroker kits are the necessary engine short block seals and relevant sealer to ensure you have everything to hand when installing our storker kit. All our gaskets are Genuine Subaru ensuring quality, exact fitment and of course reliability. \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-billet-stroker-kit-92.50mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67907710648640,"sku":"RCM2347","price":15211.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2347.jpg?v=1793316501"},{"product_id":"roger-clark-motorsport-2-1-billet-stroker-kit-92-00mm-rcm2387","title":"Roger Clark Motorsport 2.1 Billet Stroker Kit 92.00mm RCM2387","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-billet-stroker-kit-92.00mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003ePower, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit.  When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building  a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:  ¥ RCM \/ Arrow 79mm Billet Crankshaft  Quality. Innovation. Performance. The hallmarks of Arrow Precision. Only the highest quality raw materials, the latest methods and the knowledge of superbly skilled designers and engineers goes into the making of every Arrow Precision part.  Engineering precision detailed cranks begins with only the highest quality materials and a flexible batch manufacturing process. Arrow Precision works to exacting standards creating a Subaru crankshaft reverse engineered to stunning perfection. This is achieved through continuous inward investment in skilled, experienced people and working practices. Accuracy and efficiency are the hallmarks of a precision crank shaft ensuring you the strongest, lightest and most reliable crank available.  ¥ RCM \/ Omega Forged Piston Set  RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you donÕt get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5¡C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5¡C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you donÕt get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldnÕt look anywhere else.  ¥ RCM \/ Arrow H Section Connecting Rod Set  Quality. Innovation. Performance. The hallmarks of Arrow Precision. Only the highest quality raw materials, the latest methods and the knowledge of superbly skilled designers and engineers goes into the making of every Arrow Precision Connecting Rod. The high strength RCM H Section Connecting Rod is carefully and precisely manufactured by these very craftsmen using a low sulphur Vacuum de-gassed nickel chrome alloy steel called EN24 in ÒV conditionÓ, with a pined surface finish. Each rod is ultrasonically tested, crack detected and balanced to within a gram of each other before finally receiving the RCM seal of quality in the form of our laser engraved logo.  ¥ ACL Race Bearings  Used the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:  ¥ High strength overlay plate with reduced thickness for improved fatigue properties ¥ Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. ¥ Increased crush for improved bearing retention ¥ Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. ¥ Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. ¥ 3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. ¥ Tight consistent wall tolerances to help you maintain consistent clearances. ¥ Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.  ¥ Engine Block Gasket Kit \u0026amp; Sealer  Included in our stroker kits are the necessary engine short block seals and relevant sealer to ensure you have everything to hand when installing our storker kit. All our gaskets are Genuine Subaru ensuring quality, exact fitment and of course reliability. \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-billet-stroker-kit-92.00mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67907710681408,"sku":"RCM2387","price":15211.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2387.jpg?v=1793316502"},{"product_id":"roger-clark-motorsport-2-1-forged-stroker-kit-92-00mm-rcm2386","title":"Roger Clark Motorsport 2.1 Forged Stroker Kit 92.00mm RCM2386","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-forged-stroker-kit-92.00mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003ePower, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit.  When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building  a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:  ¥ Subaru EJ25 Heat Treated Crankshaft  Manufactured by FHI Japan the Subaru Forged Crankshaft is a strong, reliable and proven component. The crank is induction hardened to be extremely resilient to wear and provides a great foundation for any performance engine.  ¥ RCM \/ Omega Forged Piston Set  RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you donÕt get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5¡C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5¡C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you donÕt get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldnÕt look anywhere else.  ¥ RCM \/ Arrow H Section Connecting Rod Set  Quality. Innovation. Performance. The hallmarks of Arrow Precision. Only the highest quality raw materials, the latest methods and the knowledge of superbly skilled designers and engineers goes into the making of every Arrow Precision Connecting Rod. The high strength RCM H Section Connecting Rod is carefully and precisely manufactured by these very craftsmen using a low sulphur Vacuum de-gassed nickel chrome alloy steel called EN24 in ÒV conditionÓ, with a pined surface finish. Each rod is ultrasonically tested, crack detected and balanced to within a gram of each other before finally receiving the RCM seal of quality in the form of our laser engraved logo.  ¥ ACL Race Bearings  Used the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:  ¥ High strength overlay plate with reduced thickness for improved fatigue properties ¥ Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. ¥ Increased crush for improved bearing retention ¥ Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. ¥ Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. ¥ 3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. ¥ Tight consistent wall tolerances to help you maintain consistent clearances. ¥ Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.  ¥ Engine Block Gasket Kit \u0026amp; Sealer  Included in our stroker kits are the necessary engine short block seals and relevant sealer to ensure you have everything to hand when installing our storker kit. All our gaskets are Genuine Subaru ensuring quality, exact fitment and of course reliability. \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-forged-stroker-kit-92.00mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67907710714176,"sku":"RCM2386","price":6234.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2386.jpg?v=1793316502"},{"product_id":"roger-clark-motorsport-2-1-forged-stroker-kit-92-25mm-rcm2344","title":"Roger Clark Motorsport 2.1 Forged Stroker Kit 92.25mm RCM2344","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-forged-stroker-kit-92.25mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003ePower, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit.  When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building  a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:  ¥ Subaru EJ25 Heat Treated Crankshaft  Manufactured by FHI Japan the Subaru Forged Crankshaft is a strong, reliable and proven component. The crank is induction hardened to be extremely resilient to wear and provides a great foundation for any performance engine.  ¥ RCM \/ Omega Forged Piston Set  RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you donÕt get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5¡C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5¡C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you donÕt get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldnÕt look anywhere else.  ¥ RCM \/ Arrow H Section Connecting Rod Set  Quality. Innovation. Performance. The hallmarks of Arrow Precision. Only the highest quality raw materials, the latest methods and the knowledge of superbly skilled designers and engineers goes into the making of every Arrow Precision Connecting Rod. The high strength RCM H Section Connecting Rod is carefully and precisely manufactured by these very craftsmen using a low sulphur Vacuum de-gassed nickel chrome alloy steel called EN24 in ÒV conditionÓ, with a pined surface finish. Each rod is ultrasonically tested, crack detected and balanced to within a gram of each other before finally receiving the RCM seal of quality in the form of our laser engraved logo.  ¥ ACL Race Bearings  Used the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:  ¥ High strength overlay plate with reduced thickness for improved fatigue properties ¥ Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. ¥ Increased crush for improved bearing retention ¥ Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. ¥ Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. ¥ 3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. ¥ Tight consistent wall tolerances to help you maintain consistent clearances. ¥ Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.  ¥ Engine Block Gasket Kit \u0026amp; Sealer  Included in our stroker kits are the necessary engine short block seals and relevant sealer to ensure you have everything to hand when installing our storker kit. All our gaskets are Genuine Subaru ensuring quality, exact fitment and of course reliability. \u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-forged-stroker-kit-92.25mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67907710746944,"sku":"RCM2344","price":6234.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2344.jpg?v=1793316503"},{"product_id":"roger-clark-motorsport-2-1-budget-street-forged-stroker-kit-92-00mm-rcm2385","title":"Roger Clark Motorsport 2.1 Budget Street Forged Stroker Kit 92.00mm RCM2385","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-street-forged-stroker-kit-92.00mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003ePower, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit.  When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choices wisely. Building  a new engine, or rebuilding your existing engine is something you should only need to do once, therefore its important that you use components which are fit for purpose and will provide you with a solid foundation in which to increase power further down the line. With our stroker kits we offer just that:  Ç Subaru EJ25 Heat Treated Crankshaft  Manufactured by FHI Japan the Subaru Forged Crankshaft is a strong, reliable and proven component. The crank is induction hardened to be extremely resilient to wear and provides a great foundation for any performance engine.  Ç RCM \/ Omega Forged Piston Set  RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing.  So why forged?  A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from solid is marginally better than a forging but the strength benefits of a forging far outweigh any benefits of a fully machined piston. You get excellent grain structure when a piston is forged correctly, the way Omega do it. In a fully machined piston you don?t get any true grain flow structure as you are using the material as it is cut from the bar. When you forge the material you create optimal molecular alignment within the material coupled with their own in-house bespoke heat treatment and this is what gives the piston its strength.  CNC (Computer Numeric Controlled) machines are used to do most of the machining that turns a forging into a piston. When finished, the piston is sent to the quality control department to be measured. The quality control department is kept at a constant 20.5?C, important as pistons can expand by as much as 10 microns in sunlight. This way the pistons can also be measured for tolerance anywhere in the world, provided the same 20.5?C conditions are replicated.  The piston skirt is designed and machined to give a profile that works most efficiently when the engine is at full working temperature. Piston skirt profiles are not round but elliptical in shape and barrelled in length. The machining of the skirt is done on extremely accurate machines, capable of holding their repeatability down to 5 microns!  All RCM \/ Omega Pistons are individually weighed and batched to within 0.5 grams, which ensures that a set of four will have a tolerance deviation of no more than 2.0 grams. On large orders this means that it is not unusual to have a set of 4 pistons with only 0.1 gram deviation!  Both Gobstopper I and II have always used Omega pistons. With both cars developing over 700bhp (plus the additional option of nitrous oxide) and a rev limit of 10,000 rpm you don?t get a greater test for any piston. Omega pistons have always performed faultlessly even under the most extreme of conditions which is why when choosing our preferred manufacturer we wouldn?t look anywhere else.  Ç Manley Conrod Set  Manley H-Beams are not only very \"economically\" priced, but they are finished to the same exacting tolerances and high quality standards as their more expensive Sportsmasterå and Pro Series rods. Final hone size, thread detail, bend and twist are all attributes found in a Manley Conrod.    Ç ACL Race Bearings  Used the world over, ACL's reputation speaks for itself. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings feature:  Ç High strength overlay plate with reduced thickness for improved fatigue properties Ç Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. Ç Increased crush for improved bearing retention Ç Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. Ç Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. Ç 3\/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. Ç Tight consistent wall tolerances to help you maintain consistent clearances. Ç Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.\u003ca href=\"https:\/\/www.prospeedracing.com.au\/rcm-2.1-street-forged-stroker-kit-92.00mm-ej20\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"Roger Clark Motorsport (RCM)","offers":[{"title":"Default Title","offer_id":67907711467840,"sku":"RCM2385","price":4568.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/1152\/0064\/files\/RCM2385.jpg?v=1793316519"}],"url":"https:\/\/shop.vctrperformance.com\/collections\/stroker-kit.oembed","provider":"VCTR","version":"1.0","type":"link"}