If your Bafang BBS01B/BBS02B/BBSHD is not working with pedal assist, but does work with throttle use, you may need to replace the Pedal Assist Sensor (PAS) circuit board.
This pack includes:
- Replacement PAS Circuit Board.
- Replacement plug
- Protective sheath
Suitable for all the Bafang mid drive kits.
BBSHD, BBS01B and BBS02B