square flange rear axle Electric Motor for Bike with size adjustable

1. Prompt reply to ensure work efficiently  
2. professional  engineer team to solve the techinical problem with you 
3. You can check the detail with us via mail ,skype , whatsap etc. easy to work .
4. Good price and quality guarantee to develop together 

Warranty

Shanghai YIWO will provide our clients a Claim Documents before cooperate.During the warranty period, 

in case of material or workmanship has occurred with spare sparts in normal operation, the defective part 

will be repaired or replaced free of charge, and the parts will be delivered with next batch goods.

Spare Parts

Shanghai YIWO will provide our clients a documents on axle parts before produce. And provide a 

part price list for purchase.

Installation and Maintenance

Shanghai YIWO will provide Clients the instruction manual on installation and Maintenance.

If necessary, we will send technicist to site guidance.

Technical Service

We have strong after-sale technical service team to help you solve all problem during you use our products.