AIRTEC Motorsport 3.5” Secondary Cat Bypass for BMW G80 M3 and G82 M4 mini challenge Kit includes :

Kit includes :

4 Strips included

Finished in Piano Black

Running 207mm or dual pulley ratio setups may cause supercharger clutch failure on CREC engines and is not recommended

6mm Euro 3 Racing Catalytic Converter

AIRTEC Motorsport 3.5” Secondary Cat Bypass for BMW G80 M3 and G82 M4 mini challenge Kit includes :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 engines 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