Rear Fatbike (Max45)

Our Rear Fatbike Max45 kits put the high-power 45 mm All-Axle motor in the back of a fatbike, sized for the wide rear spacing fat frames use. You get the Max45's extra torque for sand, snow, and loaded touring, with regenerative braking and the option of built-in torque sensing.

Not sure where to start? Build a complete kit for your bike step by step in the kit builder, or check the compatibility guide to see which motors fit your frame. You can also compare performance in the motor simulator, browse real conversions in the project gallery, or if you're new to ebikes, start with our Start Here guide.

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