The Brembo Big Brake Kit for 2015–2018 BMW M3 (excluding carbon-ceramic equipped cars) rear applications includes four-piston billet calipers and 380×28 mm two-piece slotted Type 1 rotors with nickel plating. This rear-specific kit is sized for direct replacement, improving rotor cooling and brake feel through larger rotors and multi-piston calipers while matching factory mount points.
Brembo 15-18 M3 Excl CC Brakes Rr GTR BBK 4Pis Billet 380x28 2pc Rotor Slotted Type1-Nickel