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Mid-Drive Motor Service

Mid-drive motors deliver power through the cranks and need periodic service to stay smooth and quiet. We inspect, clean, and repair internal gears, bearings, and seals.

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Common causes

  • Worn internal nylon drive gears
  • Grinding or rattling from the motor
  • Worn bearings inside the unit
  • Failed seals letting in water or grit
  • Power loss or assist cutting out
  • Firmware or sensor fault inside the drive

Frequently asked questions

How often does a mid-drive motor need servicing?

Most need a check-up every 1 to 2 years or a few thousand miles, sooner if you hear grinding or notice power loss.

Can worn internal gears be replaced?

Yes - on many mid-drives the nylon drive gears are serviceable parts that can be replaced without a whole new motor.

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