GTHAUS GT2 Racing Exhaust (Includes SUS SR Pipes) Stainless for 2008-2012 BMW M3(BM0521304) 2523 Replaces secondary cats with an

Replaces secondary cats with an option for high-flow 100 cell flat cats for deeper tone

Variable Cam Control supported for engines with a single cam sensor only

Though designed to closely match OEM fitment

CSF has brought to the sport compact market the most advanced drag race cooling system ever developed

GTHAUS GT2 Racing Exhaust (Includes SUS SR Pipes) Stainless for 2008-2012 BMW M3(BM0521304) 2523 Replaces secondary cats with anMeisterschaft Premium exhaust systems utilize traditional and modern styling to create the world's most advanced exhaust system. From the high polish exterior finish to the marvelous hand welds, Meisterschaft exhaust systems look as beautiful as they sound. Second to none. Meisterschaft, MUSA, and American Roar Racing exhaust systems provide the most unique exhaust notes that you'll find in the industry, period. Our exhaust systems are custom tailored