AIRTEC Motorsport Downpipe Sports Cat for BMW G Series – M2, M3 & M4 sti or not lose them in

or not lose them in your room

These billet aluminum parts will not pack and wear over time

whilst still allowing access to the oil filler cap and dipstick

For Mercedes Benz E-CLASS (W210)

Spark plug technology

AIRTEC Motorsport Downpipe Sports Cat for BMW G Series – M2, M3 & M4 sti or not lose them inBy replacing the restrictive primary catalytic converters located in the original downpipes with specially designed high flow sports cats, 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. Complete with replacement fitting kit, the downpipes will mate to a standard or aftermarket