Valvetronic Design Audi RS5 B9 Valved Sport Exhaust SystemWelcome to a sound revelation for the Audi RS5 B9 Platform. With such a potential powerplant, the 2. 9 L V6 hides a truly incredible set of vocals behind the heavy and restrictive factory exhaust equipment. With the Valvetronic Designs full exhaust system, we ensure this incredible powerplant sings all the way up to the redline. Traditionally, in the audi exhaust market, there are many different pieces of the exhaust that you have to purchase from