These threaded multi-speed freewheels from SunRace are compatible with BionX Electric Bike Kits.
If your existing bike already has an ISO thread-on freewheel, you can use it with your BionX kit. If your bike has a 7-, 8-, 9-, or 10-speed hub, purchase one of these freewheels appropriate for your bike.
- 7-SpeedFreewheel Cogs: 13-28Chain Compatibility: 3/32″
- 8-SpeedFreewheel Cogs: 13-32Chain Compatibility: 3/32″
- 9-SpeedFreewheel Cogs: 11-32Chain Compatibility: 9-Speed
- 10-SpeedFreewheel Cogs: 11-36Chain Compatibility: 10-Speed