EBC Slotted Rear Rotor Set, DO NOT FIT UPGRADE PADS TO REAR OF VEHICLE UNLESS SAME UPGRADE FITTED TO FRONT. The Thermic Black coating does NOT need to be removed before installation. Do NOT use brake cleaner or any other method to remove Thermic Black coating from discs rotors. The Thermic black coating will be removed in the pad swept area by the brake pads within the first 10 to 20 stops made after installation on the vehicle. The Thermic Black coating is an anti-corrosion coating for long resistance against rust. Attempting to remove Thermic Black Coating with brake cleaner or any other method is NOT covered under the EBC warranty.