While the need to replace the rear hub motor is rare when using a Bafang 750 watt rear hub motor, it is a part that can fail due to a variety of reasons. The good news is that replacing a rear hub motor in our R750 series bikes is a fairly straightforward job that can be completed in under 30 minutes by a bike mechanic. Please see the video above for step-by-step instructions on what steps are required to complete this project.