Wheel Speed Sensor with Spoke Magnet, 4-Pin Waterproof Plug, 40 cm - Fits Bafang M410 / M510 / M600 / M620 Systems
Does it fit your bike?
- Fits Bafang M410
- Fits Bafang M510
- Fits Bafang M600
- Not for Bafang BBS01B / BBS02B / BBSHD speed sensors (different plug)
- Not for Systems with 3-pin, 5-pin or 8-pin speed plugs
Restore your speedometer and speed-based assist with a replacement wheel speed sensor and spoke magnet for Bafang mid-drive systems. The sensor mounts on the chainstay and reads a magnet clipped to a spoke, with a dual Hall sensor for reliable signal detection. The 40 cm cable ends in a blue 4-pin waterproof male plug.
Fits the speed-sensor port on Bafang M410, M510, M600 and M620 systems whose harness has the blue 4-pin speed plug. A missing or misaligned speed signal usually shows as zero speed on the display, wrong trip data, or a speed-related error message.
Key facts: 5 V supply (+/- 0.5 V), under 10 mA, IP65, operating range -40 to 125 C. The gap between sensor and magnet must be 10 to 20 mm. Mount the sensor on the rear chainstay with an M5 x 12 Phillips screw at 1 N.m, clip the magnet to a spoke and tighten its Torx screw at 1.5 to 2 N.m.
Before you order: unplug your current speed sensor and check the plug. It must be a blue, 4-pin waterproof plug. BBS01B / BBS02B / BBSHD speed sensors use a different plug and are not covered by this part.
Allow about 20 to 30 minutes. Not sure it fits? Email photos to support@riderow.com and we'll check before you order.
Specs & fit
Key specs
| Voltage | 5 V (+/- 0.5 V) |
|---|---|
| Current rating | <10 mA |
| Connector | 4-pin waterproof, male (blue) |
| Pins | 4 |
| Cable length | 400 mm (15.7 in) |
| Waterproof | IP65 |
| Certification | EN 15194 / RoHS (manufacturer-stated) |
Compatibility
Compatible with
- Fits Bafang M410
- Fits Bafang M510
- Fits Bafang M600
- Fits Bafang M620
- Bafang systems whose harness has the blue 4-pin speed-sensor plug
Not compatible with
- Bafang BBS01B / BBS02B / BBSHD speed sensors (different plug)
- Systems with 3-pin, 5-pin or 8-pin speed plugs
- Rotor-mounted or disc-mounted speed magnets (this is a spoke magnet)
In the box
- 1 x speed sensor with 40 cm cable and 4-pin plug
- 1 x spoke magnet (magnet unit)
Install
- Difficulty
- Moderate
- Time
- 20-30 min
- Tools
- Phillips screwdriver, Torx driver, Zip ties
Before you order
- 1) Close-up of your current speed sensor and its plug (blue, 4-pin?).
- 2) Where the sensor sits on the chainstay and where the magnet clips on the spoke.
- 3) Photo of the motor label (M-series model).
Shipping
Ships from our partner warehouse in the US. Shipping is $18.99 per order under $70 and free on orders of $70 or more; lower 48 states only (no Hawaii or Alaska).
Data source: Manufacturer spec