Airtec - 3.5" Secondary Cat Bypass BMW M3/M4 G8X wide-body-kit Purple Bushes – This insert

Purple Bushes – This insert is aimed at fast road / track day use

as we updated this core with a dual-pass flow and internal fins for improved heat transfer

installs in under one hour

Ford Focus ST Mk3 Hatchback / Estate 2012-2014

Installation is different than in the case of standard splitters

Airtec - 3.5" Secondary Cat Bypass BMW M3/M4 G8X wide-body-kit Purple Bushes – This insertStand out with this incredible Airtec 3. 5" Secondary Cat Bypass for all BMW M3 M4 G8X. (Years: 2019 Present) 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