QS Motor QSD180A-90
QS180 90H Mid Drive Motor — 8000W rated, 18kW continuous, 20kW peak IPM PMSM inrunner. 180mm stator diameter, 90mm stack height, 4 pole pairs. The largest QS mid-drive motor. 4300-6000 RPM, 14.3 Nm rated / 100 Nm peak torque. 300A max DC current, 850A max phase current. Encoder sensor with PT1000 temperature probe. Air cooled, IP67. 150 km/h capable. For adult electric motorcycle builds.
In brief: 8000W mid-drive motor. 48–72V rated. From $498 across 2 sellers.
Specs verified Jun 12, 2026
Where to Find
Prices tracked across 3 sellersPrice History
Price History
Price changes tracked by the crawler
Current best price $1,391.56. Over the past 90 days: low $1,391.56, high $1,391.56, average $1,391.56 — about average.
- AliExpress - AliExpress - NBPower
All Records
1 price record in this period
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
AliExpress - AliExpress - NBPower(1 record) | |||||||||
| Jun 12, 202605:58 AM | $1,391.56 | — | $1,391.56 | Initial | — | — | — | Yes | active |
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Specifications
Motor Design
- Design
- Inrunner PMSM
- Stator Diameter
- 180mm
- Stator Height
- 90mm
- Pole Pairs
- 4
- Shaft Type
- Spline
- Cooling
- Air
Performance
- Wattage
- 8000W
- Peak Wattage
- 20000W
- Rated Voltage
- 48–72V
- Rated RPM
- 4300
- Max Torque
- 100.00Nm
Electrical
- Continuous DC Amps
- 300A
- Max Phase Amps
- 850A
- Flux Weakening RPM
- 6000RPM
Features
- PAS Sensor Type
- None
- Temp Sensor
- PT1000
- Has Encoder
- Yes
Physical
- Weight
- 21.6 kg
- IP Rating
- IP67
Ports & Connectors
Phase Wires3 Ring Terminals
Motor Phase
| Pin | Wire color | Function |
|---|---|---|
| 1 | Yellow | Phase A |
| 2 | Green | Phase B |
| 3 | Blue | Phase C |
Encoder
Hall SensorTemperature
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red | 5V Power |
| 2 | Black | Ground |
| 3 | Yellow | Encoder A |
| 4 | Green | Encoder B |
| 5 | Blue | Encoder Z (Index) |
| 6 | Orange | Motor Temp |
| 7 | White | Ground |
| 8 | No color | None |
