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The Brembo GT big brake kit for 1987–1991 Porsche 928 S4/GT rear pairs four‑piston cast calipers with two‑piece 328×28 mm rotors, supplied as a rear set. It includes slotted Type‑1 rotors in a red finish and is sized for the specified 928 rear application, intended as a complete replacement braking solution for those model years.
Brembo 87-91 928 S4/GT Rear GT BBK 4 Piston Cast 2pc 328x28 2pc Rotor Slotted Type-1-Red
