The Brembo rear GTS big brake kit for 2001–2006 M3 applications pairs a four-piston cast caliper with a 345 x 28 mm two-piece drilled rotor finished in black. Specified for rear fitment on M3 models, this GTS kit provides multi-piston caliper hardware and serviceable two-piece rotors as a vehicle-specific replacement intended to upgrade the factory rear braking setup.
Brembo 01-06 M3 Rear GTS BBK 4 Piston Cast 345x28 2pc Rotor Drilled-Black HA