Increase power and sound with a free-flowing x-pipe section that replaces the restrictive and redundant factory secondary catalytic converters for increased exhaust flow.
This system was born through a customer's request for a more aggressive exhaust note out of his M-Performance rear muffler equipped M3, and when it comes to new development we are happy to oblige. We have developed a secondary cat bypass X-pipe to remove the restrictive factory catalytic converters and improve the sound. Up the tone without drone!
FEATURES:
Fits all BMW F80 / F82 M3 & M4 vehicles (2015+) including vehicles equipped with the M-Performance Exhaust - Select Your Trim Level Above.Â
Simple bolt-on installation with NO Check Engine Lights -Â Minor cutting required for removal of OEM part on Standard M3 / M4 Model
Dramatic improvement in exhaust tone
Direct replacement for restrictive and redundant OEM secondary catalytic converters
Constructed in-house at Fabspeed from 14-16ga CNC mandrel-bent T304L stainless steel
Flanges and braces waterjet cut and CNC milled in-house by our precision machine shop
Simple bolt-on installation with NO check engine lights
All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
INCLUDES OEM GASKETS
Vehicle Fitment Chart:
MAKE
MODEL
CHASSIS
YEAR
BMW
M3
F80
2015-2021
BMW
M4
F82
2015-2021
DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
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Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
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When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.
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