The Brembo GT rear big brake kit pairs a four-piston cast caliper with a 345x28 mm two-piece drilled rotor to upgrade rear braking for 2006–2008 Z4 M Coupe and Roadster models. This drilled rotor variant in red combines with the cast 4-piston caliper to provide improved heat evacuation and steadier pad performance under repeated braking, aimed at drivers wanting a robust, vehicle-specific replacement.
Brembo 06-08 Z4 M-Coupe/Roadster Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Drilled-Red