The Brembo GT rear big brake kit for S4 (2004–2008) and A4 (2006–2008) applications features four-piston cast calipers with two-piece 345 x 28 mm drilled rotors and a silver caliper finish. This rear-specific kit is supplied with two-piece rotors and 4-piston calipers sized for the listed applications, offering a direct-fit replacement and a clean, OEM-compatible visual upgrade for those model years.
Brembo 04-08 S4/06-08 A4 Rear GT BBK 4 Piston Cast 2pc 345x28 2pc Rotor Drilled-Silver