
034Motorsport Stainless Steel Racing Catalyst, BMW F2x/F3x B58 Vehicles
Ships free in the US
Make sure this fits your car
Fits: M340i G20/G21, M440i G22/G23/G26, M240i G42 & 6 more
- Shop tested in Dallas
- Free pickup in Dallas
- Installs at our shop
PRODUCT DESCRIPTION:
The 034Motorsport Stainless Steel Racing Catalyst for BMW F2x/F3x B58 Vehicles is designed as a drop-in replacement for the restrictive factory catalytic converter. The Stainless Steel Racing Catalyst offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note. This upgrade eliminates the primary flow limitation in the factory exhaust system, allowing you to maximize the potential of your turbocharged engine.
Optimized for increased flow and maximum performance, the Stainless Steel Racing Catalyst features a Euro 4 racing catalytic converter in the factory location. This complete drop-in solution includes an integrated v-band flange at the turbine outlet, integrated oxygen sensor bung after the catalyst, and a complete gasket/hardware kit to allow for precise fitment and ease of installation. The Stainless Steel Racing Catalyst for BMW F2x/F3x vehicles is constructed from 304 stainless steel for maximum durability and corrosion resistance, is TIG-welded, and includes an integrated OE style heat isolation barrier to minimize exhaust heat transferred into the engine bay.
034Motorsport's Stainless Steel Racing Catalyst was developed entirely in-house on 034Motorsport's Development F30 BMW 340i utilizing the latest in 3D Scanning Technology, CAD Software, and Rapid Prototyping Techniques. Final production units were then tested extensively on track in B58 vehicles before release.
FEATURES:
- Increased Horsepower & Torque Throughout the Powerband
- Quicker Turbocharger Spool & Faster Transient Response (150-300 RPM Quicker Spool)
- Enhanced Exhaust Note & Turbocharger Sounds
- Direct, Bolt-In Upgrade for Factory Catalytic Converter
- Engineered In-House by 034Motorsport's Engineering Team
- Factory-Location Euro 4 Racing Catalytic Converter
- 304 Stainless Steel Construction with Integrated Inlet/Outlet Flanges & O2 Sensor Bung
- Precision CNC-Machined Flange Mating Surfaces
- OE Style Isolating Flex Section
- OE Style Heat Isolation Barrier
- TIG Welded & Backpurged
WHAT’S INCLUDED:
- Stainless Steel Racing Catalyst
- New V-Band Gasket
Fitment:
- F30 340i/340iX (2014-2019)
- F31 340i/340iX (2014-2019) (Euro Only)
- F32 440i/440iX (2015-2019)
- F33 440i/440iX (2015-2019)
- F34 340i GT/ 340iX GT (2015-2019)
- F36 440i/440iX (2015-2019)
- F22 M240i/M240iX (2016-2020)
- G11/G12 740i / 740iX / 740Li (2014-2019)
- G20 M340i/ M340iX (2018-2019)
- G29 Z4 M40i (2018-2019)
EMISSIONS DISCLAIMER:
This product is sold for racing use as well as use on vehicles not registered for on highway use.
By purchasing this product, you understand that this product is sold for racing use as well as used on vehicles not registered for on highway use, and that it is not legal for use on highway or street vehicles.
This catalyst requires a Stage 2 Racing Use Only Remap to eliminate any check engine lights due to removal of the factory catalyst.
Listed for these cars. Check the title and description for exact years, body styles and drivetrain.
| Make | Model | Chassis | Years | Fits |
|---|---|---|---|---|
| BMW | M340i | G20/G21 | 2019+ | |
| BMW | M440i | G22/G23/G26 | 2021+ | |
| BMW | M240i | G42 | 2022+ | |
| BMW | M240i / M235i | F22/F23 | 2014–2021 | |
| BMW | 340i / 335i / 330i | F30/F31 | 2012–2019 | |
| BMW | 440i / 435i | F32/F33/F36 | 2014–2020 | |
| BMW | 540i / M550i | G30/G31 | 2017–2023 | |
| BMW | Z4 M40i | G29 | 2019+ | |
| Toyota | GR Supra 3.0 | A90/A91 | 2020+ |
Not sure? Call or text 945-954-1142 with your car or VIN.
- Free US shipping on orders over $250.
- Free pickup at our Dallas shop, usually ready within 24 hours.
- Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
- Want it installed? Book the install at thegbmotors.com.
Full details are on our shipping and returns page.
More for your build


Spool BMW Gen 1 B58 Wireless Ethanol Analyzer Kit
![Spool IFX150 Upgraded DI Injectors [Gen 1 B58]](https://cdn.shopify.com/s/files/1/0734/5084/8395/files/InjectoruploadB58Gen1.jpg?v=1793145541&width=3840)

Spool IFX150 Upgraded DI Injectors [Gen 1 B58]

SPOOL B58 G2 / S58 Plug and Play Motiv Reflex Plus Harness

