The Brembo Rear GT big brake kit mounts at the rear with four-piston cast calipers and 380x28 two-piece drilled rotors finished in Red. Two-piece rotors support better cooling and serviceability while the four-piston calipers enhance rear braking modulation. This specific kit is listed for 2015–2018 M3 (with CC brake equipment) rear applications as indicated in the listing.
Brembo 15-18 M3 (CC Brake Eqpt) Rr GT BBK 4Pis Cast 380x28 2pc Rotor Drilled-Red