QS 90H 138 4000W 90H 7500W Air Cooled Mid Drive Motor Max Continous 72V 100KPH Offroad Dirtbike
QS 90H 138 4000W 90H 7500W Air Cooled Mid Drive Motor Max Continous 72V 100KPH Offroad Dirtbike
For 138 4000W Dirtbike Mid Drive Motor, it could be used for electric light motorcycle, which could be 72V 100KPH.
What’s more, we provide chain gear adapters as default.
One set including below kits
Combo1.
1. 1pc X QS 138 4kW Mid drive motorwith 14T 428 sprocket adapter
Combo2.
1. 1pc X QS 138 4kW Mid drive motorwith belt design
1. 1pc X QS 138 4kW Mid drive motorwith sprocket design 
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:
11T Sprocket Installation
Dimension Drawing:
-
QS 4kW 138 mid drive motor belt model
Test report
QS 138 90h 4kW+SIAYQ72180 controller
Conversion Kits
(Click the picture can guide the website)
Conversion kits for QS 4kW mid dirve hub motor
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.
