Feature●Replacement For - suitable for most 50cc 70cc 110cc 125cc 140cc 160cc motorcycle dirt bikes and ATV with 4 wheel.●Function - To replace the old worn gears and ensure motorcycle works normally.●Motorcycle Sprocket Size - Fit 428 Chain 12 Tooth Sprocket. Fit for Shaft Diameter: 17mm / 0.67, Eye to Eye Center Length: 30mm / 1.18.●Installation - Easy to install and replace the broken chain sprocket, no special tools needed.●Purchase Note - Please ensure this part is suitable for your vehicle before purchasing.Description