034Motorsport BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW 3 Series G20 (2019+)

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Performance exhaust options from the best BMW aftermarket producers and the most reliable replacement maintenance parts are all at Turner Motorsport. Over time, factory exhaust on the cleanest examples of BMW heritage shows their age. Our factory replacement exhausts are just what you need to keep your favorite car in showroom condition or finish off your restoration. If you are looking for a bump in sound and power, you can also find our performance options like Headers, Downpipes, and Mufflers from Corsa, DINAN, and others on this page.
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034Motorsport Stainless Steel Racing Catalyst/Downpipe
034Motorsport Stainless Steel Racing Catalyst/Downpipe
For 2018-2019 models only
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
034Motorsport - Corporate Logo
T#:26771743
Part#: 034-105-4051
Ships in 2 Business Days
Sale - Save 10% $ 1,158.00

This product was last offered at the strikethrough price on
06-28-2026

$ 1,042.20 USD
Free Shipping
Add to Wish List
Sale - Save 10%
$ 1,158.00

This product was last offered at the strikethrough price on
06-28-2026

$ 1,042.20 USD
Free Shipping
Add to Wish List
The 034Motorsport Stainless Steel Racing Catalyst is purpose-built to replace the restrictive factory catalytic converter in BMW F2x/F3x B58 vehicles. With this downpipe installed, drivers can expect significant gains in horsepower and torque throughout the powerband. Additionally, turbocharger lag is reduced, throttle response is improved, and the exhaust note is enhanced for a more aggressive tone. By eliminating the primary bottleneck in the stock exhaust system, this upgrade allows owners to fully unlock the potential of their turbocharged engines.
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