S4

CTS Turbo has been dedicated to manufacturing performance parts for enthusiasts by enthusiasts since its inception. Their continued development of the B8 platform is not limited to FMIC kits or Turbo kits, their all new catback exhaust system is evidence...

This Sport version of the Catback is the more aggressive of the two systems offered by B&B however don???t let that fool you. With B&B??'s proprietary Purge Resonance Technology (PRT) design muffler you still have an ear pleasing tone at low rpm...

B&B Sport Catback Exhaust System Audi S5 4.2L V8 08+Each Billy Boat Performance Exhaust system incorporates 3 generations of fabrication skill and racing talent. Every system starts with T-304 stainless steel, known throughout the industry as the...

The lower priced sibling of our renowned Touring Edition Exhaust, the Track Edition is made of the same quality T304L stainless, is crafted in house, and delivers the same power gains. The difference comes in the removal of AWE’s sound-cancelling...

The lower priced sibling of our renowned Touring Edition Exhaust, the Track Edition is made of the same quality T304L stainless, is crafted in house, and delivers the same power gains. The difference comes in the removal of AWE’s sound-cancelling...

APR MS100161 Wheel Spacer Kit The APR MS100161 Wheel Spacer Kit is engineered to enhance your vehicle's wheel fitment and aesthetics. These spacers provide the necessary offset to achieve a more aggressive stance or to facilitate clearance for larger...