utf8 QSMOTOR 2000W 120 70H electric motorbike mid drive motor for electric motorcycle | QSMOTOR

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QS 120 2kW 72V60KPH Mid drive motor with 428 sprocket driven

Price:US $217.00/piece
Production Period:10~12Working days
  • QSMOTOR 2000W 120 70H electric bike mid dirve motor
  • QSMOTOR 2000W 120 70H electric bike mid dirve motor
  • Votol EM100SP Controller for QSMOTOR 2000W 120 70H electric bike mid dirve motor
  • VOTOL EM100SP CONTROLLER WITH QS 2kW mid drive motor
  • QSMOTOR 2000W 120 70H electric bike mid dirve motor assemble kits

QS 120 2kW 72V60KPH Mid drive motor with 428 sprocket driven



For 1202000W mid drive motor kit assembly, it could be used for electric scooter, electric motorcycle.

It could be 72V 60KPH.

It can be designed as belt driven ( default ) and sprocket design ( Customized ).


You can click below picture for Aliexpress purchasing link.





Key Features


1). Simplify to make a electric-motorcycle. Gearbox, transmission shaft, clutch are no need. Which save space.

2). It could be installed in the rear to save more space for battery.

3). Support regenerative braking

4). High efficiency: 85~92% 



Product description


Genearlly Spec:


  1. Item: QS Motor 2000W 120 70H Mid Drive Motor
  2. Motor Type: BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor
  3. Brand: QS Motor, QSMOTOR
  4. Motor Design: Single axle 
  5. Matched Wheel: 12inch Wheel (as default)
  6. Magnet Height: 70mm, 40pcs, 5 pole pairs
  7. Diameter of stator: 120mm
  8. Rated Power: 2000W
  9. Rated Voltage: 72V as default
  10. Speed: 60KPH 
  11. No-load rpm: 2800rpm without flux weakening, 4400RPM with flux weakening.
  12. Max Torque: approx 45.4N.m without Reduction ratio, approx 216.7N.m with 1:4.77 Reduction ratio  
  13. Reduction ratio: 1:4.77 (as default)
  14. Max Efficiency: 88%
  15. Continuous Battery Current: pending (72V)
  16. Peak Battery Current: 60A (72V)
  17. Suggest Peak Phase Current: 250A
  18. Thermic Probe: None as default (KTY83/122 is available, if you need, please let sales man know).
  19. Working Temperature: Pending
  20. Single Hall Plate with waterproof connectors
  21. 8mm² Cross Section of Phase Wire (not include insulation layer)
  22. Hall Sensor Phasing angle: 120 degree
  23. Waterproof Grade: IP54
  24. Color: Black 
  25. N.W./G.W.: 10.8kgs/11.5kgs   
  26. Package Dimension: 34cm*34cm*33cm
  27. Axle matched with 428 sprocket, teeth optional(12T, 13T, 14T...etc)


P.S.: For 2kW 138 old mid drive motor, it can be designed as belt driven.(As default)

If you want to buy such mid drive motor, please kindly click below picture.


DSC03859 抠


Dimension Drawing:


  • QS 2kW 120 mid drive motor(old appearance, belt driven)




Please noted:


Optional appearance, drawing, performance curve/test report are available. 

If you need more technical information, please feel free to contact us.

We will give you reply in 12hours.



Matched controller recommendation:


  • Item: EM100SP sine wave controller
  • Net weight: 1650g
  • Rated current: 100A
  • Boost current: 130A
  • Peak current: 330A
  • Max. Power: 7200W
  • Flux Weaking Ratio: 100~250%
  • Max. Efficiency: 88~93%
  • Degree of protection: IP67

If you're interested in buying motor and controller together, please kindly click below picture.





Conversion kits for QS 2kW mid dirve hub motor


We're able to supply Controller, display, dc-dc converter, disc brake system, twist throttle, matched tire...etc.

138 kits with tire



Application for 2kW mid drive motor


mid drive

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