utf8 QSMOTOR 120 2000W Mid Drive Motor Assembly Kits

QSMOTOR 120 2000W Mid Drive Motor Assembly Kits

Price:US $444.00/piece
Production Period:10~12Working days
  • QSMOTOR 120 2000W Mid Drive Motor Assembly Kits
  • QSMOTOR 120 2000W Mid Drive Motor Assembly Kits

QSMOTOR 120 2000W Mid Drive Motor Assembly Kits(No Tire & Disc brake system)

For 2000W mid drive motor kit assembly, it could be used for electric scooter, electric motorcycle. 

e.g. M3 electric motorbike

E-motorbike weight, approx 115kg+2*80kg

Speed: continuous 70km/h

Gear ratio: 1:4.77

Battery: 72V40h NCM lithium battery

Tire: 130/70-12 


If you have interested in this product, you can contact with our sales directly.


Sales Contact: damon@siaecosys.com

Skype: Damon Wong(QSMOTOR)


We Chat:+86 18758618893


Aliexpress online purchasing link for this motor kits: 


Key Features


1). Simplify to make a electric-scooter. 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


1. Genearlly Spec:


 Motor Type: BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor

 Brand: QS Motor, QSMOTOR

 Motor Design: Single axle 

 Matched Wheel: 12inch Wheel (as default)

 Magnet Height: 70mm, 40pcs, 5 pole pairs

 Diameter of stator: 120mm

 Rated Power: 2000W

 Rated Voltage: 72V as default

 Speed: 60KPH 

 No-load rpm: 2800rpm without flux weakening, 4400RPM with flux weakening.

 Max Torque: approx 45.4N.m without Reduction ratio, approx 216.7N.m with 1:4.77 Reduction ratio  

 Reduction ratio: 1:4.77 (as default)

 Max Efficiency: 88%

 Continuous Battery Current: 35A (72V)

Peak Battery Current: 60A (72V)

Suggest Peak Phase Current: 250A

Thermic Probe: None as default (KTY83/122 is available, if you need, please let sales man know).

Working Temperature: Pending

Single Hall Plate with waterproof connectors

8mm² Cross Section of Phase Wire (not include insulation layer)

Hall Sensor Phasing angle: 120 degree

Waterproof Grade: IP54

Color: Black 

N.W./G.W.: 7.8kgs/9.1kgs   

Package Dimension: 34cm*34cm*33cm


2. Dimension Drawing


3. Test report


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.

Conversion kits for QS 120 2KW mid drive motor

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

For online purchasing link, please click the picture.


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