QS Motor QS205 50H V3 5000W 3.5T (21")
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QS205 50H V3-pattern direct-drive hub motor, 5000W rated, 3.5T winding, pre-laced into a 21" moped/motorcycle rim (150mm dropout). 205mm stator, 50mm magnet, 16 pole pairs, dual hall + KTY83 temp probe, disc brake. Sold by NBPower as 'NBpower/QS205 50H V3'; consistent with a genuine QS205 50H V3 (16pp aluminium) but not independently verified as QS-produced — NBPower units are stamped 'NBP WP50H'. Winding sets torque-per-amp and top speed (3T fastest ~1020rpm … 5T highest-torque ~650rpm); peak torque is a current-limited envelope, ~170-180 N·m at the 3kW/80A tier rising to ~200-220+ N·m at the 5kW/100A+ tier.
In brief: 5000W direct drive rear hub motor. 21" wheel. Fits 150.0mm dropout. 48–96V rated. Disc brake compatible. From $302 across 3 sellers.
Specs verified Sep 12, 2026
Where to Find
Prices tracked across 3 sellersAliExpress - NBEBIKES Store
$302.03 + $160.87 shipping
AliExpress - NB Ebike Factory Store
$342.39 + $192.39 shipping
AliExpress - NBEBIKES Store
$399.50 + $160.87 shipping
eBay - NBPOWER EBIKES
$599.00 + $50.00 shipping
* Shipping estimates are for the contiguous US and may vary by location.
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Price History
Current best price $342.39. Over the past 90 days: low $302.03, high $342.39, average $322.36 — up 6% vs average.
- AliExpress - NB Ebike Factory Store
- AliExpress - NBEBIKES Store
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Specifications
Performance
- Drive Type
- Direct Drive
- Wattage
- 5000W
- Peak Wattage
- 10000W
- Rated Voltage
- 48–96V
- Rated RPM
- 840
- Pole Pairs
- 16
- Stator Diameter
- 205mm
- Max Torque
- 220.00Nm
- Max Speed
- 100km/h
Fitment
- Position
- Rear
- Dropout Width
- 150mm
Wheel
- Pre-laced
- Yes
- Wheel Size
- 21"
- Disc Brake
- Yes
- Rim Brake
- No
- Spoke Holes
- 36
Physical
- Weight
- 10.8 kg
Ports & Connectors
| Pin | Wire color | Function |
|---|---|---|
| 1 | Yellow | Phase A |
| 2 | Green | Phase B |
| 3 | Blue | Phase C |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red | 5V Power |
| 2 | White | Motor Temp |
| 3 | Black | Ground |
| 4 | Yellow | Hall A |
| 5 | Green | Hall B |
| 6 | Blue | Hall C |
