AIRTEC Motorsport 3.5” Secondary Cat Bypass for BMW G80 M3 and G82 M4 mini challenge this system provides high-flow exhaust

this system provides high-flow exhaust with huge power and noise gains

ProRam pleated aliminium base filter

Equivalent BMW part numbers 17217853240

Finished in Piano Black

AIRTEC Motorsport 3.5” Secondary Cat Bypass for BMW G80 M3 and G82 M4 mini challenge this system provides high-flow exhaustBy 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