This rear sprocket is used on the Chinese 50cc-125cc engines. This sprocket has 37 teeth and is compatible with the 420 chain ONLY.
Sprocket details:
- 420 chain
- 37 teeth
- Center hole diameter: 58mm [2.89"]
- Mounting hole diameter: 8.5mm [.33"]
- Mounting holes: 63.5mm [2.50"] center to center [side by side]
- Mounting holes distance: 90mm [3.56"] straight across
- Overall diameter: 154mm [6.05"]
Be sure to measure your chain or current sprocket before ordering. 420 chain has 1/2" pitch and 5/16" roller diameter.
Known to fit the Tao Tao DB10 and Coolster 210 and 213 dirt bikes.
