... ,UL, RoHS DIY Electric bicycle conversion kit Gear motor with 9 spockets 12-28''wheel,150-350w CCC ... MARKETBATTERYMOTOR WHEELWEIGHT24v-10AH LIMNFRONT gear motor 100MM150w-250w12"-28"700C13KG24v-10AH LIMNFRONT gear motor (100MMwith DISK BREAK ADAPTER)150w ... 1OKG Electric system MotorFront wheel,light,high speed,brushlessGreat hub motor,16inch28inch wheel optional.DISC brake optionalRear wheel Company ...