Integral one piece style vented rotor and aluminum caliper with automotive quality brake pads. E-coat finish protects the caliper from salt crystallization. Galv-X coated brake pad backing plates further reduce corrosion. All aluminum caliper, 380 Series alloy, sheds heat fast. Compact design allows short axle overhangs and provides direct brake line routing. Oil impregnated bronze bushing last longer. Oversize rubber boot is 50% thicker. Stainless steel caliper slide pins are easily accessible for quick removal. Fits most 13″, 14″ & 15″ wheels.Two kits required per axle.