The Brembo GT rear big brake kit for 2015–2018 M3 (excluding carbon-ceramic calipers) applications features four-piston cast calipers and two-piece 345 x 28 mm drilled rotors with a black finish. This rear kit is supplied as two-piece rotors and 4-piston calipers sized for the specified M3 years, intended as a direct-fit upgrade and offering a subdued black caliper appearance for those vehicles.
Brembo 15-18 M3 Excl CC Brake Rr GT BBK 4Pis Cast 345x28 2pc Rotor Drilled-Black