The AWE B7 S4 Track Edition Exhaust is a direct bolt on Cat Back system that not only transforms the rear end of the car with it's menacing quad tips, but also turns heads with a deep muscular bass note. Each cat back system features an H-Pipe crossover tube at the front to maximize exhaust scavenging for maximum power, as well as to take a harsh edge off the exhaust sounds. Tubing diameter for the entire system is 2.25". Dig into the throttle and you'll realize why we call this the "track edition." This is a loud exhaust, with potential for drone due to the strategic elimination of certain resonators. For this reason, it can not be returned for sound. Family drivers and client entertainers, we suggest the Touring Edition ExhaustDyno proven for legitimate power gains of 14.2 hp and 14.8 lb-ft torque corrected to the crank on our in house Mustang AWD dynamometer, the B7 S4 Performance Exhaust is a must have for any B7 enthusiast.When it comes to tips, the Track Edition finishes off with quad 90mm slash-cut tips, featuring the AWE logo, so they know what team you're on. All tips are individually adjustable, allowing depth into the bumper to be set according to personal taste. They're also double walled to ensure a mirror finish - even under hard usage. Lookin* good!
AWE Track Edition Exhaust for Audi B7 S4 - Chrome Silver Tips

Fitment:
2006 Audi S4 Avant
2006 Audi S4 Base
2007 Audi S4 Avant
2007 Audi S4 Base
2008 Audi S4 Avant
2008 Audi S4 Base