Bafang Rook/Colt/Boar Nylon Gears

Set of 3 nylon reduction gears with mounting plate for the Bafang 500W motor used on Surface 604 Rook, Colt, and Boar models (2016-2021+). These internal motor gears transfer power from the motor's rotor to the hub shell.

They are designed to wear as a sacrificial component, protecting the more expensive motor internals. If your motor is making a grinding or clicking noise, or you feel the motor engaging but the wheel is not being driven, worn gears are the likely cause. A straightforward repair that can be done at home with basic tools.