FabSpeed BMW M235i (F22) Sport Cat Downpipe



HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light.    

Inject new life into your M235i with a perfect high-flow catted downpipe! Genuine 200-cell HJS HD catalyst instantly adds a staggering 21 whp and 36 ft/lbs of torque at 3000 RPM without triggering a check engine light!            


  • Fits all BMW F22 M235i vehicles

  • Designed with a 200-cell HJS HD catalytic converter core for maximum performance and reliability; same cat core used on our Ferrari 458 Italia applications!

  • Direct bolt-on replacement; no cutting or welding required

  • Does not trigger a check engine light

  • Complies with most emissions regulations (NOTE: It the purchaser's responsibility to verify legality and compliance in their region.)

  • Adds 21 whp and 36 ft/lbs of torque at 3000 RPM

  • A crease is incorporated to allow for clearance in any M235i setup


  • Peak Power

    • Stock= 309 whp / 328 ft/lbs

    • Exhaust = 322 whp / 356 ft/lbs

  • Maximum Gains

    • 3000 RPM = +21whp / +36ft/lbs

    • 4500 RPM = +26whp / +22ft/lbs

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. This product contains a High-Flow Sport Catalytic Converter solely intended for track and race cars as it is 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.