Bafang BBS01B
The Bafang BBS01B is the entry-level Bafang mid-drive, sharing the BBS02B housing but with a 6-FET controller and lower output (250W EU / 350W). It produces up to 80 Nm and roughly 600W peak through a 1:21.9 two-stage reduction with a 44T chainring, using a 12-magnet cadence PAS and the Bafang UART display protocol. Fits standard 68/73mm threaded bottom brackets; IPX5 water resistance. Popular for lightweight, EU-compliant pedelec and stealth conversions.
In brief: 350W mid-drive motor. Fits 68–73mm bottom bracket. 36–48V rated. From $516.
Specs verified Jun 23, 2026
Where to Find
Prices tracked across 3 sellersAliExpress - IEBIKE Motor Battery Store
$515.85 + free shipping
AliExpress
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Specifications
Performance
- Wattage
- 350W
- Peak Wattage
- 600W
- Rated Voltage
- 36–48V
- KV Rating
- 59
- Max Torque
- 80.00Nm
- Max Speed
- 35km/h
- Chainring Teeth
- 44
Fitment
- Bottom Bracket Width
- 68mm – 73mm
Features
- PAS Sensor Type
- Cadence
- Temp Sensor
- None
Physical
- Weight
- 3.6 kg
- Dimensions (L×W×H)
- 200mm × 112mm
- IP Rating
- IPX5
Ports & Connectors
| Pin | Wire color | Function |
|---|---|---|
| 1 | Brown | Battery + |
| 2 | Orange | Power Switch Signal |
| 3 | Green | UART RX |
| 4 | Yellow | UART TX |
| 5 | Black | Ground |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red | 5V Power |
| 2 | Black | Ground |
| 3 | Blue | Throttle Signal |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red / White | Brake Signal (Low) |
| 2 | Black | Ground |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red / White | Brake Signal (Low) |
| 2 | Black | Ground |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red | 5V Power |
| 2 | Black | Ground |
| 3 | Yellow / White | Speed Signal |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red / Brown | 12V Power |
| 2 | Black | Ground |
