Wilwood 120-13292 CALIPER-AERO6-L/H-BLACK ANODIZE (.80 THK PAD)Wilwood 120 13292 CALIPER AERO6 L H BLACK ANODIZE (. 80 THK PAD) The new Aero6 forged six piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12. 88" to 15. 00" give this caliper the versatility necessary to suit all types of heavy weight braking