This 34 tooth rear sprocket is made from hardened, corrosion resistant steel. Commonly (though not exclusively) used for 50cc to 500cc dirt bikes, ATVs, go karts and buggies. Approximate dimensions:
Outside Diameter: 141mm
Centre Hole Diameter: 63.9mm
Mounting Hole (centre-centre): 56mm
Mounting Hole (centre-centre diagonal): 80mm
Bolt Hole: 8.8mm
Thickness: 5mm