AIRTEC Motorsport 3.5” Secondary Cat Bypass for BMW G80 M3 and G82 M4

By replacing the restrictive secondary catalytic converters located in the mid-pipe section directly after the downpipes, back pressure is reduced, which effectively improves the engine’s breathing by allowing it to expel gases more quickly. This in return means faster throttle response, increased power output and a more aggressive exhaust note.

Measuring 3.5” in diameter, this direct replacement mid-pipe offers improved flow over standard and comes complete with a replacement exhaust brace and fitting kit, which will mate to original catalytic converters, aftermarket sports cats or aftermarket de-cats.

Will fit the following models:

•     BMW G80 M3 (left and right-hand drive)

•     BMW G82 M4 (left and right-hand drive)

Please note:

-     Sports cats are sold for motorsport and off road use only and may not pass a UK MOT test or police road side checks.

-     An ECU recalibration is required in order to ensure the EML is not illuminated.

Features:

•     Direct replacement part to fit both left and right-hand drive

•     Removes restrictive secondary catalytic converters and GPF

•     Made from high quality stainless-steel

•     Smooth bends to ensure increased flow

•     Fits standard cats, aftermarket sports cats or aftermarket de-cats

•     Comes complete with fitting kit

AIRTEC Part No: ATEXHBMW6