The Brembo GTS rear big brake kit for 2006–2010 BMW M5 and M6 features four-piston cast calipers with 380 x 28 mm two-piece slotted rotors in Type-3 black finish. Designed as a rear axle upgrade, the kit replaces OE hardware with larger rotors and multi-piston calipers to improve stopping control and manage heat during repeated heavy braking scenarios.
Brembo 06-10 M5/06-10 M6 Rear GTS BBK 4 Piston Cast 380x28 2pc Rotor Slotted Type3-Black HA