SportStop one-piece direct replacement rotors fit stock calipers. Drilling or slotting helps wipe away the debris that forms between the pad and the disc, adds more bite, and can help the rear brakes to match the aesthetics of a front big brake kit. The rotor finish helps prevent glazing of the pads and improves wet and dry braking performance. Most StopTech rotors have a durable black coating on the non-swept areas of the rotor to prevent unsightly corrosion. Quality is assured as the rotors are manufactured to meet or exceed all OE specifications. These direct replacement rotors' internal vane structure is identical to stock rotors, but they are available slotted or drilled.