We provide customized services, customers can pay for customized samples, the number is unlimited.
If you need samples, you can directly contact us to submit your requirements.
The following parameters can be used as reference.

For example：
Tire Width:26/27.5/29
Wheel Size:26/27.5/29
Capacity:7/10.4/13/17AH 
Motor position:Mid-set/Rear 
Range per Power:60-200KM
Gears:7S/9S/10S/11S/21S/24S
Battery Position:Inside/External
Frame Material:Aluminum Alloy/High-carbon steel

If you are not familiar with product parameters, you can also provide reference product pictures or drawings,
and we will give production evaluation feedback.