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  1. Surface 604
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Support

2020 Bikes

  • How to replace freehub body on Surface 604 bikes
  • How to swap the motor core on Surface 604 bikes
  • How to replace torque sensor on Surface 604 bikes
  • Surface 604 pedal assist troubleshoot 2020+
  • How to swap the controller on 2020+ Surface 604 bikes
  • How to properly care for your Surface604 battery
See all 17 articles

2017/2018/2019 Bikes

  • My headlight lights up when I press the brakes
  • [Rook / Colt] My pedal assist is intermittent
  • [Boar E350] My pedal assist is intermittent
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