The Audi S4 is such a well built car for the true enthusiasts. From the factory you're getting a well built, comfortable and powerful car. At APR we can help take what you already have and make it even better! With a full support within Software & Tuning, Wheels, Brakes, Engine Hardware and so much more.

APR’s cold air intakes embody European performance engineering—precision-crafted carbon-fiber airboxes, silicone plumbing, and high-flow filters designed to let your engine breathe freely, respond quicker, and deliver enhanced performance and induction sound on VW and Audi vehicles.