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-, or 9-speed freehub and cassette, purchase one of these freewheels appropriate for your bike.
(Call us if you need a thread-on freewheel with more or fewer speeds than the three listed here. We can special order one for you.)
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BionX Axle Washer
BionX Axle Nut with Serrated Flange
BionX Ultra Grip Torque Isolator