Front Rotor Outside Dia: 10.15 in (258mm). Outside Dia: 10.15 in (258mm). Rotors Material: Steel. Brake Rotor. Position: Front. Installed on a vehicle for which it was not designed to;. Warranty policy does Not apply to any part that has been: Altered, misused, or improperly-installed; Installed on a vehicle for which it was not designed to; Installed on a racing or high-performance vehicle, or vehicle with modified suspension/rims/tires.