Brembo 15-18 M3 (CC Brake Eqpt) Rr GT BBK 4Pis Cast 380x28 2pc Rotor Drilled-Silver

This Brembo Rear GT Big Brake Kit (BBK) includes everything you need to upgrade the braking performance on your 2015-2018 BMW M3 equipped with the CC Brake Equipment. You get a pair of 4-piston calipers, two 380x28mm two-piece rotors that are drilled for improved cooling, and all the necessary hardware to get them installed. This kit is designed to replace your stock rear braking components with a more robust setup that can handle more demanding driving conditions.

The calipers in this kit are cast aluminum, which helps keep unsprung weight down while still offering a solid foundation for the pistons. The two-piece rotors are a notable upgrade; the floating design allows the rotor to expand and contract with heat without binding, which can help prevent warping and maintain consistent braking performance. The drilled surface on the rotors helps to vent gases and heat away from the pad surface, further improving stopping power, especially during repeated hard braking. Brembo is a well-known name in braking systems, and this kit represents their GT line, aimed at providing improved performance for spirited driving.

When installing a big brake kit like this, it's important to ensure you have the correct tools and follow the manufacturer's installation instructions carefully. Proper bedding-in of the new pads and rotors is also crucial to achieve optimal performance and longevity. This kit is a significant upgrade for drivers looking for a more responsive and fade-resistant braking system.