... bicycle kitFor European market BATTERYMOTOR WHEELWEIGHT24v-10AH NCMFRONT gear motor 100MM 150w-250w 12"-28"700C13KG24v-10AH NCM FRONT gear ... 7-10KGElectric systemMotor: Front wheel,light,high speed,brushlessGreat hub motor,16inch 28inch wheel optional.DISC brake optionalBattery: 24V/10Ah ... :Speed:25Km/h(Euro) 20miles/h (USA&Canada) Range:35-50Km/22-31miles depending on battery,way of riding,wind ...