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The Brembo rear GT big brake kit for 2015–2018 M3 is a direct-fit rear upgrade combining four-piston cast calipers with 380 x 28 mm two-piece slotted rotors in red (Type 3 slot). Supplied as a rear kit, it replaces OE components with a two-piece rotor design and matching hardware for installation, giving a robust, serviceable braking solution for demanding street driving and track days.
Brembo 15-18 M3 (CC Brake Eqpt) Rr GT BBK 4Pis Cast 380x28 2pc Rotor Slotted Type3-Red
