VCTR Performance BMW B58 Catted Downpipe Kit

Overview

The B58 factory downpipe includes a small pre-catalyst that limits post-turbo exhaust flow. This high-flow catted downpipe replaces it with a less restrictive unit — improving turbo spool and supporting tuned B58 power targets across F-series and early G-series 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 with high-flow catalyst. Wide B58 platform fitment across multiple F and G-series chassis from 2017 onwards.

Fitment

Compatible with:

• BMW M140i F20 / F21 (2012–2019) — 3.0L N55 Single Turbo
• BMW M140i F20 / F21 (2016–2019) — 3.0L B58 Single Turbo
• BMW M240i F22 / F23 (2016–2021) — 3.0L B58 Single Turbo
• BMW 340i F30 / F31 (2016–2019) — 3.0L B58 Single Turbo
• BMW 440i F32 / F33 / F36 (2016–2019) — 3.0L B58 Single Turbo
• BMW 540i G30 (2017+) — 3.0L B58 Single Turbo
• BMW 740i G11 / G12 (2016+) — 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 M240i G42 (2022+) — 3.0L B58 Single Turbo
• BMW Z4 M40i G29 (2019+) — 3.0L B58 Single Turbo
• Toyota GR Supra A90 / A91 (2019+) — 3.0L B58 Single Turbo
• BMW Z4 M40i G29 (2019+) — 3.0L B58 Single Turbo

Note: B58 F/G-chassis downpipe confirmed for M140i/M240i/340i/440i/540i/740i F-series, M340i/M440i G-series, Z4 G29, Toyota Supra A90 (VRSF, MODE, Revhigh 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: B58 3.0T
• 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.