Brembo 08-17 S5/09-16 S4 Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Slotted Type3-Black

This Brembo GT Big Brake Kit for the rear of your 2008-2017 Audi S5 or 2009-2016 S4 includes everything you need to significantly upgrade your braking system. You get a pair of Brembo's 4-piston GT calipers, two 380x28mm two-piece rotors with a Type 3 slotting pattern, and all the necessary hardware for installation. This kit is designed to replace your factory rear brakes with a much more robust setup, offering a substantial improvement in stopping performance and heat management.

The 4-piston GT calipers are cast from aluminum for a good balance of strength and weight, and they work with larger brake pads to increase the contact area with the rotor. This means more clamping force and better heat dissipation. The two-piece rotors are a notable upgrade; the cast iron friction ring is separate from the aluminum hat. This design helps reduce weight and allows for better thermal management, as the hat can expand and contract more freely without stressing the friction surface. The Type 3 slotting pattern on the rotors is a popular choice because it helps to sweep away dust and gas that can build up between the pad and rotor, maintaining consistent braking performance even under heavy use. The black finish on the calipers and the specific slotting pattern give your vehicle a distinct, performance-oriented look.

Upgrading to a big brake kit like this is a significant modification, and it's often done to complement other performance modifications or simply to achieve a higher level of braking confidence. While this kit is designed as a direct replacement for the factory rear brake components, it's always a good idea to consult the manufacturer's installation guide for specific details and torque specifications. You'll want to ensure your brake fluid is fresh and properly bled after installation to get the most out of this high-performance braking system.