Eisenmann Silver Series Performance Race Exhaust - G8X M3 / M4All M cars should have theaterthey are designed to entertain, baffle, and methodically extract not only mechanical performance but an emotional one as well. Eisenmanns success is predicated on delivering a heightened experience through manufacturing hand built, German made exhaust systemsthey are responsible for some of the finest exhausts for BMW M cars since the companys inception in 1988. This vast experience has afforded Eisenmann access to both