✅ Pre-soldered hall chips, plug-and-play installation without welding
✅ Specially match BBS01/BBS02=G340、BBSHD=G320 original mid motor
✅ Fix common Error 08, intermittent power loss and motor stall fault
✅ Original size PCB, perfect mounting position same as factory board
✅ Professional maintenance spare part for 250W~1000W Bafang mid drive motor
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