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The Brembo Big Brake Kit for 1987–1991 Porsche 928 S4/GT rear pairs four-piston cast calipers with two-piece 328×28 mm slotted Type 1 rotors in black. This rear upgrade increases disc diameter and adds multi-piston braking to improve pedal modulation and heat dissipation for the specified 928 models. Two-piece rotors make service and rotor replacement more manageable for these applications.
Brembo 87-91 928 S4/GT Rear GT BBK 4 Piston Cast 2pc 328x28 2pc Rotor Slotted Type-1-Black
