Grin Rear All-Axle 72V CA3 Conversion Kit

Grin Rear All-Axle 72V Conversion Kit with Phaserunner Controller, and built-in Torque Sensor. Supports 135x9 Quick Release, 142x12 and 148x12 Thru Axle dropouts.

The Grin All-Axle hub is a direct-drive motor series we designed to be universally compatible with all the varieties of quick-release and thru-axle mounting standards that exist in the bike world these days. It solves the compatibility problem between hub motors and modern bicycle frames, it provides the benefits of direct drive without the traditional heft, and it simplifies installation with integrated torque arms and torque sensors.