VCTR Performance BMW B48 Catted Downpipe Kit

Overview

The B48's factory downpipe includes a small-cell pre-catalyst that restricts post-turbo flow. This high-flow catted downpipe replaces it with a less restrictive catalyst, improving turbo spool and exhaust flow on B48 applications.

Why Upgrade?

• High-flow catalyst significantly less restrictive than the factory pre-cat or OPF
• Improved exhaust flow and turbo response versus the OEM downpipe
• Retains catalytic converter — better suited to road-registered vehicles
• Stainless steel construction for durability
• More defined exhaust tone on tuned applications

Engineering Focus

SS304 stainless steel construction with a high-flow catalyst replacing the OEM pre-cat. Wide B48 platform fitment across F and G-series chassis.

Fitment

Compatible with:

• BMW 540i G30 (2017+) — 3.0L B58 Single Turbo
• BMW M340i G20 / G21 (2019+) — 3.0L B58 Single Turbo
• BMW M440i G22 / G23 (2021+) — 3.0L B58 Single Turbo
• BMW 330i G20 (2019+) — 2.0L B48 Single Turbo
• BMW 430i G22 / G23 (2021+) — 2.0L B48 Single Turbo

Note: B48 downpipe confirmed for 230i/330i/430i/540i F & G chassis (VRSF, Active Autowerke, DCE Parts confirmed). Verify your specific model, year and build variant before ordering.

What's Included

• High-flow catted downpipe assembly
• Supplied gaskets and installation hardware

Specifications

• Material: SS304 Stainless Steel
• Catalyst: High-flow
• Engine: B48 2.0T
• Fitment: OEM flange replacement

Delivery & Support

Your order is carefully inspected before dispatch and backed by VCTR Performance support. For product availability, shipping estimates or fitment assistance, contact our team.