The Brembo rear GT big brake kit for 2001–2006 M3 pairs four-piston cast calipers with 345x28 mm two-piece rotors in a slotted Type‑3 pattern finished in silver. It targets improved rear stopping stability and thermal performance for the specified M3 applications, with the two‑piece rotor design helping to control heat and simplify rotor maintenance while preserving OEM-style fit.
Brembo 01-06 M3 Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Slotted Type-3-Silver