Brembo big brake kit for 2008-2014 Subaru WRX STI (rear) delivers rear stopping power with four-piston calipers and two-piece 345x28 mm slotted rotors in silver. The GT BBK uses cast four-piston calipers and 2pc 345x28 slotted Type 1 rotors, finished silver, and is specified for rear WRX STI applications where improved rotor cooling and braking consistency are desired.
Brembo 08-14 WRX STI Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Slotted Type1-Silver