Brembo 06-08 RS4 Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Drilled-Black

This is the Brembo Rear GT Big Brake Kit for the 2006-2008 Audi RS4. It's a comprehensive upgrade designed to significantly improve your rear braking performance. The kit centers around a pair of robust 4-piston cast iron calipers and large 380x28mm two-piece rotors, which are drilled for heat dissipation. This setup replaces your factory rear brakes with a much more capable system, ideal for drivers who push their RS4 hard or want the best possible stopping power.

Brembo is well-known for its high-performance braking components, and this kit is no exception. The calipers are cast iron for strength and durability, housing four pistons that apply even pressure across the braking surface. The two-piece rotor design is a notable feature; the cast iron friction ring is attached to an aluminum hat. This construction helps reduce unsprung weight and allows the rotor to expand and contract more freely with heat, which can help prevent warping. The rotors are drilled, a common feature on performance brakes that helps vent gases and heat away from the pad surface, maintaining consistent stopping power even under heavy use. The kit comes with everything you need to install this rear brake upgrade, including the calipers, rotors, mounting brackets, and brake lines specifically made for the RS4 application.

When installing a big brake kit like this, it's important to ensure your entire braking system is in good condition. While this kit focuses on the rear, a balanced system is key. You'll want to make sure your front brakes are also up to the task, and that your brake fluid is fresh. This Brembo kit is a substantial investment in your car's performance and safety, offering a significant step up from the stock braking system for spirited driving or track use.