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The Brembo GT rear big brake kit for 2012–2014 BMW 328i M Sport (excluding xDrive) rear applications includes 4‑piston cast calipers paired with 345×28 mm two-piece drilled rotors in silver. Marketed as a rear GT BBK for M Sport fitment, it matches multi‑piston calipers to drilled rotors to improve cooling and produce a more stable brake pedal feel under demanding conditions.
Brembo 12-14 328i MSport Brakes Excl xDrive Rr GT BBK 4Pis Cast 345x28 2pc Rotor Drilled-Silver
