At CTS Turbo we are proud to announce our Audi C7 S6/S7/RS6/RS7 4.0L V8 velocity stack air intake system. Air then flows through our high flow cone air filter, which utilizes an inverted cone design for maximum engine breathing. Our CNC mandrel-bent aluminum intake pipe allows for smooth entry of cold air into the engine providing peak power gains ranging from 10-20HP. All of the components included in the CTS air intake system work flawlessly together to provide increased horsepower and torque throughout the entire power band and an aggressive race-inspired sound.Only for Audi C7 S6/S7/RS6/RS7 4.0L V8!Product Detail:Massive 6″ velocity stack air filter with an inverted cone design that connects with our reducers to the intake pipe.4 Ply silicon connector with stainless steel clamps.Amazing sound!Installation guide