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The Brembo Rear GT big brake kit for 2009–2015 CTS‑V applications matches a four‑piston rear caliper to a two‑piece 380×28 mm cast rotor with drilled face in black finish. Recorded as a rear GT BBK, the description specifies rotor diameter, thickness and two‑piece construction to supply the rear brake configuration defined for the CTS‑V model years listed.
Brembo 09-15 CTS-V Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Drilled-Black
