Cheap And Discounts QSMOTOR 138 3000W V2 Version 72V 70H 100KPH New Appearance Mid Drive Motor Power Train Kits with SIAYQ72120 Controller Wholesale. Buy Directly From Merchant SIA Tech Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.