Wilwood 120-13264 Brake Caliper Superlite 4 Piston Gray 14. in ODx1.250in Rotor. Brake Caliper – Superlite – 4 Piston – Aluminum – Gray Anodized – 14.00 in OD x 1.250 in Thick Rotor – 5.980 in Radial Mount – Left Side – 1pc.