The Brembo GT front big brake kit for 2004–2017 Subaru WRX STI pairs 4‑piston cast calipers with 355×32 mm two‑piece drilled rotors in silver. Supplied for the front axle of the stated WRX STI years, the kit includes the cast calipers and two‑piece drilled rotors sized to that application, combining a two‑piece rotor design with drilled faces and the listed rotor dimensions.
Brembo 04-17 WRX STi Front GT BBK 4 Piston Cast 2pc 355x32 2pc Rotor Drilled-Silver