This Disk Rotor / Caliper Set is a concours accessory part for HPI Cup Racer cars. For the ultimate in realism we've made this set of brake rotors and calipers. The set comes with four metal coated cross-drilled rotors, four gold brake calipers, four red brake calipers, and mounting hardware. The Cup Racer has the mounting points already in place, so these parts are an easy bolt-on modification that will set your car apart from the others.