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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 sellers

Price History

Price History
Price changes tracked by the crawler

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
May 12May 19May 26Jun 2Jun 9Jun 16Jun 23Jun 30Jul 7Jul 14Jul 21$600.00$675.00$750.00$825.00$900.00
All Records
34 price records in this period
DatePriceShippingTotalChangeCouponRatingSalesIn StockStatus
Biktrix(33 records)
Jul 25, 202607:30 PM$899.00$899.00$0.00Yesactive
Jul 24, 202604:00 PM$899.00$899.00$0.00Yesactive
Jul 21, 202603:47 PM$899.00$899.00$0.00Yesactive
Jul 20, 202609:03 AM$899.00$899.00$0.00Yesactive
Jul 12, 202604:55 PM$899.00$899.00$0.00Noactive
Jul 9, 202603:20 PM$899.00$899.00$0.00Yesactive
Jul 7, 202603:26 PM$899.00$899.00$0.00Yesactive
Jul 5, 202603:26 PM$899.00$899.00$0.00Yesactive
Jul 3, 202602:20 PM$899.00$899.00$0.00Yesactive
Jul 1, 202603:24 PM$899.00$899.00$0.00Yesactive
Jun 29, 202604:18 PM$899.00$899.00$0.00Yesactive
Jun 27, 202603:16 PM$899.00$899.00$0.00Yesactive
Jun 25, 202609:24 AM$899.00$899.00$0.00Yesactive
Jun 23, 202609:42 AM$899.00$899.00$0.00Yesactive
Jun 21, 202609:21 AM$899.00$899.00$0.00Yesactive
Jun 19, 202610:16 AM$899.00$899.00$0.00Yesactive
Jun 17, 202609:18 AM$899.00$899.00$0.00Yesactive
Jun 15, 202609:27 AM$899.00$899.00$0.00Yesactive
Jun 13, 202609:27 AM$899.00$899.00$0.00Yesactive
Jun 12, 202609:23 AM$899.00$899.00$0.00Yesactive
Jun 3, 202609:08 AM$899.00$899.00$0.00Yesactive
Jun 2, 202609:09 AM$899.00$899.00$0.00Yesactive
May 31, 202609:08 AM$899.00$899.00$0.00Yesactive
May 29, 202609:07 AM$899.00$899.00$0.00Yesactive
May 27, 202609:06 AM$899.00$899.00$0.00Yesactive
May 25, 202612:41 PM$899.00$899.00$0.00Yesactive
May 23, 202609:01 AM$899.00$899.00$0.00Yesactive
May 21, 202609:01 AM$899.00$899.00$0.00Yesactive
May 19, 202609:01 AM$899.00$899.00$0.00Yesactive
May 18, 202609:01 AM$899.00$899.00$0.00Yesactive
May 16, 202609:01 AM$899.00$899.00$0.00Yesactive
May 14, 202609:01 AM$899.00$899.00$0.00Yesactive
May 12, 202609:01 AM$899.00$899.00InitialYesactive
Greenbikekit(1 record)
Jun 5, 202603:12 AM$620.00$620.00InitialYesactive

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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

Display Port
CAN Bus
PinWire colorFunction
1BrownBattery +
2Orange5V Power
3BlackGround
4WhiteCAN Low
5GreenCAN High

Frequently Asked Questions

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