This is CAN protocol original torque bottom bracket sensor, compatible with Bafang mid-mounted e-bike motors: M420/G332, M500/G520, M600/G521.
It is the core sensing part to capture pedaling torque signal for electric assist system.
Important Installation Notice
After replacing the torque middle shaft, you must use BESST professional calibration tool to pair and calibrate the new sensor with the motor.
The component cannot function without completing calibration matching.
Features
- Original specification, perfect replacement for faulty stock torque sensor
- Stable CAN bus signal transmission, accurate pedal force detection
- Standard mounting dimension, fits original motor structure directly
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