The Bafang M600 (G521) is a CAN-bus torque-sensing OEM mid-drive for eMTB and eCargo bikes. Rated 500W with 120 Nm of torque, it uses a triple (speed + torque) sensor, runs 36–48V, and weighs ~3.65 kg. It communicates over the Bafang CAN protocol via a triangle connector and is NOT compatible with UART BBS displays. IPX5. Crank interface is a Bafang proprietary spline (NOT ISIS) on a 104 BCD 4-bolt spider accepting 32–40T chainrings; it requires a purpose-built frame with motor mounting tabs and is not retrofittable to a standard BB-shell bike.
In brief: 500W mid-drive motor. 36–48V rated. From $620 across 2 sellers.
Specs verified Jul 25, 2026
Where to Find
Prices tracked across 2 sellersPrice History
Current best price $620.00. Over the past 90 days: low $620.00, high $899.00, average $786.07 — down 21% vs average.
- Biktrix
- Greenbikekit
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
Biktrix(33 records) | |||||||||
| Jul 25, 202607:30 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jul 24, 202604:00 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jul 21, 202603:47 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jul 20, 202609:03 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jul 12, 202604:55 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | No | active |
| Jul 9, 202603:20 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jul 7, 202603:26 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jul 5, 202603:26 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jul 3, 202602:20 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jul 1, 202603:24 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 29, 202604:18 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 27, 202603:16 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 25, 202609:24 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 23, 202609:42 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 21, 202609:21 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 19, 202610:16 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 17, 202609:18 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 15, 202609:27 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 13, 202609:27 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 12, 202609:23 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 3, 202609:08 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| Jun 2, 202609:09 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 31, 202609:08 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 29, 202609:07 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 27, 202609:06 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 25, 202612:41 PM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 23, 202609:01 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 21, 202609:01 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 19, 202609:01 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 18, 202609:01 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 16, 202609:01 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 14, 202609:01 AM | $899.00 | — | $899.00 | $0.00 | — | — | — | Yes | active |
| May 12, 202609:01 AM | $899.00 | — | $899.00 | Initial | — | — | — | Yes | active |
Greenbikekit(1 record) | |||||||||
| Jun 5, 202603:12 AM | $620.00 | — | $620.00 | Initial | — | — | — | Yes | active |
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Specifications
Performance
- Wattage
- 500W
- Rated Voltage
- 36–48V
- Max Torque
- 120.00Nm
Features
- PAS Sensor Type
- Torque
- Temp Sensor
- None
Physical
- Weight
- 3.65 kg
- Dimensions (L×W×H)
- 196mm × 44mm × 126mm
- IP Rating
- IPX5
Ports & Connectors
| Pin | Wire color | Function |
|---|---|---|
| 1 | Brown | Battery + |
| 2 | Orange | 5V Power |
| 3 | Black | Ground |
| 4 | White | CAN Low |
| 5 | Green | CAN High |








