Brembo 08-13 135i (E81/E82/E88) Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Drilled- Yellow

This Brembo GT Big Brake Kit for the rear of your 2008-2013 BMW 135i (E81, E82, E88 chassis) includes everything you need to significantly upgrade your braking system. You get a pair of yellow 4-piston GT calipers, two-piece 345x28mm drilled rotors, and all the necessary hardware for installation. This kit is designed to handle more demanding driving conditions and provides a substantial improvement in stopping power and heat management compared to the stock setup.

The calipers are cast from high-strength aluminum, reducing unsprung weight while maintaining rigidity under heavy braking. The 4-piston design ensures even pressure distribution across the larger 345x28mm rotors, which are drilled to help dissipate heat and moisture. This two-piece rotor construction allows for better thermal management, as the aluminum hat can expand and contract independently of the iron braking surface, reducing the risk of warping. The drilled pattern also aids in keeping the rotor surface clean and cool, especially during spirited driving or track use.

Upgrading to a big brake kit like this Brembo GT system is a considerable step for drivers looking for enhanced performance and consistency. It's important to ensure you have adequate cooling for your brake fluid and consider matching the rear upgrade with a suitable front brake setup for balanced braking performance. Refer to the manufacturer's installation instructions for detailed guidance on proper fitment and assembly.