Tongsheng TSDZ2B 250W
The Tongsheng TSDZ2B 250W is a BB-mount torque-sensing mid-drive motor for e-bike conversions. It fits standard 68–73mm bottom brackets and uses an integrated torque and cadence sensor for smooth, natural pedal assistance. EU-compliant 250W rating makes it popular for legal pedelec builds in Europe. IPX5 waterproof rated.
In brief: 250W mid-drive motor. Fits 68–73mm bottom bracket. 36V rated. From $285 across 3 sellers.
Specs verified Jul 14, 2026
Where to Find
Prices tracked across 4 sellersAliExpress
$284.69
AliExpress - Varstrom EU Store
$328.03
AliExpress - AliExpress - Greenergy Global Store
$396.44
AliExpress - PSWpower EU France Store
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Specifications
Performance
- Wattage
- 250W
- Rated Voltage
- 36V
- Max Torque
- 80.00Nm
- Max Speed
- 30km/h
Fitment
- Bottom Bracket Width
- 68mm – 73mm
Features
- PAS Sensor Type
- Torque
- Temp Sensor
- None
Physical
- Weight
- 3.82 kg
- IP Rating
- IPX5
