The Brembo Rear GT big brake kit for 2001–2004 996 C4S applications pairs a four‑piston rear caliper with a two‑piece 380×28 mm cast rotor with drilled face, finished in red. Noted as a rear GT BBK, the listing specifies rotor size and construction, providing the rear brake component set in the exact configuration identified for those 996 C4S model years.
Brembo 01-04 996 C4S Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Drilled-Red