Crown 420 - ø76mm - 37 teeth

• Between-axis fixation : 90mm
• Center bore : 76mm
• Available in 37 teeth
• *Not of the chain : 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 rack with the aid of a vernier caliper.

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