This disc brake rotor is made from hardened, corrosion resistant steel. Rotor has a 12 hole universal bolt pattern with. Commonly, though not exclusively, used for 50cc to 300cc dirt bikes, ATVs, go karts, scooters and buggies. Approximate dimensions:
Outer Diameter: 159mm
Centre Hole: 48mm
Thickness: 3mm
Mounting Holes: 8mm
Mounting Hole Spacing (across): 68mm (centre to centre)
Mounting Hole Spacing (side by side): 20mm (centre to centre)