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 Big Brake Kit Upgrades are ultra-durable, feature-packed solutions specifically tailored to each vehicle.