Sprocket 13 teeth - 420 - ø20mm

- Teeth : 13 teeth
- Shaft diameter : Ø 20mm.
- Not the sprocket : 420.

INFO : If you increase the transmission, you will increase top speed but decrease the torque of your engine, and if you lower the transmission, you will increase the torque of your motor, but will decrease the top speed.

*TIP : You do not know the pitch of your chain, simply measure the thickness of your crown using a vernier caliper.

- Thickness: 5mm to 6mm : 420
- Thickness 7mm to 8mm : not 428