The Brembo rear big brake kit for 2006–2012 Cayman applications fits the rear with a GT four-piston cast caliper and two-piece 345×28 mm rotors. This variant is specified with slotted Type 1 rotors finished in yellow. Supplied as a rear BBK, the package contains cast calipers and two-piece slotted rotors sized to match the Cayman rear braking layout identified in the source.
Brembo 05-1ster/06-12 Cayman Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Slotted Type1-Yellow