The EBC S1 brake pad and RK rotor kit for rear fitment includes vented rotors at 316mm diameter and 20mm thickness with five bolt holes and a 63.5mm height. These rotors are paired to match S1 pad geometry and are specified for rear axle replacement in this configuration. Thermic coating and run-out inspection are characteristic of the RK rotor family noted in related product descriptions.
EBC S1 Brake Pad and Rotor Kit