AIRTEC Motorsport 3.5” Secondary Cat Bypass for BMW G80 M3 and G82 M4 987 Boxter The KW V1 coilover kit

The KW V1 coilover kit is our entry model for more driving pleasure with an attractive and individually adjustable lowering

simply remove the factory rear silencer and factor OPF pipes and replace

It lasts longer

Dissolves very quickly any deposit

AIRTEC Motorsport 3.5” Secondary Cat Bypass for BMW G80 M3 and G82 M4 987 Boxter The KW V1 coilover kitTechnical Data 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