The Brembo Big Brake Kit for 2003–2009 Mercedes E55/E63 and 2003–2011 CLS55/CLS63 AMG rear applications is a GT rear 4-piston package combining cast calipers with 380×28 mm two-piece drilled rotors. Finished in black, the drilled rotor design aids venting while the kit serves as a direct rear upgrade to improve heat control and deliver a more substantial braking assembly than factory rear hardware.
Brembo 03-09 E55/E63/03-11 CLS55/CLS63 AMG Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Drilled-Black