... :100mm/135mm 3:brake :bolted disc 4:NEW battery pack:190USD new improved bicycle conversion kit :1: ... doublewall rim DC 36V, 150W, 250W, 300W; DC 48V, 150W, 350W, 500W. front and rear wheel motor ... backward/3speed limitedC:LI-MN 48V 12A battery and BAG :190USDD:charger 24/36/48v 1.8/3.0AE:throttle ... with battery indicator and power switchF:electric brake ...