QS Motor QS273 4000W 50H V3 Spoke (E-Bike)
QS273 4000W 50H V3 Spoke Hub Motor for e-bike builds — BLDC direct drive outer rotor. 273mm stator diameter, 16 pole pairs. 48-144V, 30-85 km/h. 152mm dropout for bicycle frame fitment. 36 spoke holes. Disc brake. IP65. 18.2 kg. The lightest QS273 variant, designed for bicycle conversion.
In brief: 4000W direct drive rear hub motor. Fits 152.0mm dropout. 48–144V rated. Disc brake compatible.
Specs verified Jul 31, 2026
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Specifications
Performance
- Drive Type
- Direct Drive
- Wattage
- 4000W
- Rated Voltage
- 48–144V
- Pole Pairs
- 16
- Stator Diameter
- 273mm
- Max Speed
- 85km/h
Fitment
- Position
- Rear
- Dropout Width
- 152mm
Wheel
- Pre-laced
- No
- Disc Brake
- Yes
- Spoke Holes
- 36
Physical
- Weight
- 18.21 kg
- IP Rating
- IP65
Ports & Connectors
Phase Wires3 wires
Motor Phase
| Pin | Wire color | Function |
|---|---|---|
| 1 | Yellow | Phase A |
| 2 | Green | Phase B |
| 3 | Blue | Phase C |
Hall Sensor6 wires
TemperatureHall Sensor
| 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 |
Frequently Asked Questions
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