The Brembo Rear GT big brake kit for BMW M3 (2015–2018) excluding CC brake models pairs a four-piston cast caliper with a 380×28 mm two-piece drilled rotor in silver. Offered as a vehicle-specific rear upgrade, the kit uses a two-piece drilled rotor to aid heat dissipation and consistent pad contact, delivering a stable braking feel while matching the listed years and fitment.
Brembo 15-18 M3 Excl CC Brakes Rr GT BBK 4Pis Cast 380x28 2pc Rotor Drilled-Silver