This disc brake rotor is made from hardened, corrosion resistant steel. Rotor has a 4 hole countersunk bolt pattern. Commonly, though not exclusively, used for 50cc to 300cc dirt bikes, ATVs, go karts, scooters and buggies. Approximate dimensions:
Outside diameter: 190mm Center of the hole: 48mm Mounting Hole spacing (in front): 68mm Mounting Hole spacing (side by side): 20mm