The Brembo GT big brake kit for 2001–2006 M3 rear applications pairs four-piston cast calipers with two-piece 345x28 mm slotted Type‑3 rotors in silver. Built for those M3 years, this rear kit uses larger slotted rotors and four-piston calipers to enhance heat dissipation and sustain braking performance under higher demand conditions.
Brembo 01-06 M3 Rear GT BBK 4 Piston Cast 2pc 345x28 2pc Rotor Slotted Type-3-Silver