All new reproduction of Sumitomo's discontinued alumimum four (40.45mm) piston front Z32 calipers for 30mm T.T. rotors. Finished in gold powdercoat and laser logos. Sold as a pair of left and right calipers with race basic pads included. Pair these with a Twin Turbo Z32 rotor from your local autoparts store & match the rears which we sell separately. Lots of information is available online about the other parts you may need to perform a complete brake system upgrade. *MAY BE USED ON BRZ WITH OUR KNUCKLE and a 05-09 Legacy GT rotor (316x30mm $15 generic to $85ea for stoptech on rock auto). *These pads need to go through several cycles of being very hot to bed into the rotor. They are totally functional out of the box but require extra stroke for lockup until they are seated on the rotor surface.