The Brembo rear big brake kit for 2012–2014 BMW 328i M Sport (excluding xDrive) applications fits the rear with a GT four-piston cast caliper and two-piece 345×28 mm rotors. This variant uses slotted Type 3 rotors in a silver finish. Packaged as a rear BBK, the kit includes cast calipers and 2-piece slotted rotors intended as replacement hardware for compatible M Sport rear braking assemblies.
Brembo 12-14 328i MSport Brakes Excl xDrive Rr GT BBK 4Pis Cast 345x28 2pc Rtr Slot Type3-Silver