Freewheels and Cassettes

The cassettes here are all Shimano HG. We don't stock SRAM XDR cassettes.
 
Most of our rear hub motors use the more modern cassette freehub system rather than a threaded side cover and a screw-on freewheel cluster. Nearly all now use the Shimano HG freehub standard. The eZee rear motor is the exception, taking an old-style threaded freewheel. The rear All-Axle comes in both Shimano HG and SRAM XDR versions, both of which we stock.
 
We stock an assortment of 7, 8 and 9 speed threaded freewheels with an 11 tooth smallest cog for people with third-party hub motors. Almost all standard threaded freewheels max out at a 14 tooth small cog, making it difficult to keep up with pedaling at faster ebike speeds.
 
If you have a bike with a 7 speed freewheel and want to upgrade to an 8 or 9 speed, you will also need spacer washers on the end of the axle. The 8 and 9 speed freewheels will almost always extend past the axle shoulder on a hub motor. We carry 3mm or 5mm spacer washers.