Get that aggressive and sharp BMW sound without any check engine lights or in cabin drone. The Supersport X-Pipe Valvetronic exhaust system includes Fabspeed's high-performance Valvetronic axle back section and our "Double-X" mid-pipe that deletes the secondary catalytic converters, for the perfect combination of sound, power, and weight reduction.

SOUND:

This system transforms the M3/M4 into a proper sounding monster. You’ll actually hear some turbo spool when letting off the throttle and you’ll feel the gritty iconic BMW straight six sound coming through the cabin under hard acceleration. Adding more pops and bangs on downshifts and giving a throaty rumble at idle.

FEATURES:

• Fits all BMW M3 & M4 (G80/G82) sedan/coupe vehicles worldwide (2021+)
• Constructed from CNC mandrel-bent 14-16 gauge T304L stainless steel
• Laser scanned and CAD designed for perfect OEM fitment using Ametek Handyscan 700
• Includes Deluxe Quad-Style Tips in your choice of finish
• World's first and only “Double-X” mid pipe design includes two investment cast “X” sections for increased exhaust scavenging, resulting in a throaty exhaust note with the least amount of rasp
• Uses aerospace quality Helical Limited exhaust valves imported from the U.K.
• No CEL (Check Engine Light) guaranteed (on US spec cars)
• Saves 8lbs / 3.6KGs compared to the factory system
• Retains factory valve functionality for “plug and play” installation
• Simple bolt-on installation, no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

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, never to be driven on public roads. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified (CARB) and not EPA certified. You are hereby informed and warned to check your local, state, and federal 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.