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The Brembo rear GT big brake kit for 2001–2006 BMW M3 is a four-piston rear assembly using 345×28 mm two-piece cast rotors. This configuration lists slotted Type‑1 rotors with a black finish and is named for the M3 rear application, matching the stated vehicle years and rotor specification for fitment.
Brembo 01-06 M3 Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Slotted Type-1-Black
