








1.Front drive motor:100mm
2.Rear drive single speed motor: 125mm
3.Rear drive 6-9speed motor: 135mm
4.Rear drive cassette:140mm
Fat bike/Snow bike
1.Front drive motor:130-140mm
2.Rear drive motor:170-190mm
Single speed, 6-9speed,cassette motor optional.
Electric motorcycle
180-200mm.








1.Q: Is it available for sample?
A: Yes. We offer sample, but free sample are not available at beginning.
2.Q: What's your warranty for products?
A: a.) If you import goods from us, we will be full refunds protection if goods itself has quality problems.
b.) We can return your money if you are not satisfied with our product within 7 days after you get the goods, you only need take the freight.
c.) We promise to replace the goods freely if there are some problems within 6months.
d.) We promise 2 years' warranty. First year, exchanging products for free and second year, maintenance free. You only need to do is pay the freight.
3.Q: What our motors' max rotating speed?
A:350RPM-1200RPM
4.Q: How much voltage we can do for motors?
A:24V,36V,48V,60V,72V,96V as your required.
5.Q:How much power we can do for motors?
A: Electric bike motor 180W-5000W.
Switched reluctance motor 1200W-10.5KW
6.Q:How much speed we can do for motors?
A: For normal electric bike motor,25-60km/h as your bike wheel size.
For switched reluctance motor,10-60km/h.
For electric motorcycle motor,60-120km/h.
For customized motor,6-120km/h, depend on your demands&requirements.
7.Q: How much wheel size we can do for electric bike conversion kit?
A:12"-700C.
8.Q: How much wheel size we can do for electric bike conversion kit?
A:12"-700C.
9.Q: What kind of battery?
A: More than 12 kinds of battery can be provided, such as water bottle battery, little frog battery, rack battery and down tube battery, etc, and customized motor is available.