Brembo 89-94 Carrera/90-94 Carrera Rear GT BBK 4 Piston Cast 2pc 328×28 2pc Rotor Drilled-Black

It is not mandatory for kit fitting, however, for 1990-1991 964 Carrera 2 vehicles originally equipped with 2-piston rear calipers, the proportioning valve in rear brake circuit can be replaced with version from 964 Carrera 2 and 4 cars originally equipped with 4-piston rear calipers for increased rear brake bias.