BAFANG BBS Mid-Motor Assist Sensor — Compatible with BBS01B / BBS02B / HD Key benefits Direct replacement for BAFANG mid-motor assist sensors compatible with most BBS01B, BBS02B and HD kits — restores pedal assist function without replacing the entire controller or motor. Cost-effective repair option that saves money and extends the life of your e-bike system compared with full motor or controller replacement. Stable, reliable performance designed to meet the needs of daily commuting and recreational riding. Why you need this Solves common assist issues: replaces a worn or failed assist sensor to recover smooth and predictable pedal assist. Prevents unnecessary downtime and high repair costs by allowing targeted replacement of the faulty component. Keeps your original motor and controller intact, preserving system compatibility and settings. Important attributes Compatibility: Specifically designed for use with Bafang BBS01B, BBS02B and HD mid-motor kits. Function: Replaces the assist sensor to restore correct pedal-assist signals and stable system behavior. Build and performance: Manufactured to match the performance expectations of Bafang mid-motor systems for consistent assist response. Typical use scenarios Swap in a replacement sensor after assist loss on a daily commuter using a BBS02B-equipped e-bike. Repair an older BBS01B or HD system to avoid the cost and complexity of motor/controller replacement. Keep a spare sensor on longer tours or for fleet maintenance to ensure quick, low-cost repairs. Support If you encounter any issue or have questions about fitment, please contact us for assistance.