... "700C 7-10Kg Electric system MotorFront wheel,light,high speed,brushlessGreat hub motor,16inch28inch wheel optional.DISC brake optional Rear wheel180w-250w ... smarharger ThrottleTwist intelligent speed control(no throttle for EUR) PerformanceMax speed25km/h(EUR),32km/h(USA&Canada) 24V 36V 48V Motor - Ebike Conversion ...