If you need a tire. 1 Front or rear Motor wheel(26/27.5/28/29inch 700C). 1 Controller Bag 1 pair Power cut-off Brake lever 1 set Twist Throttle 1 8 Magnet Pedal Assistant Sensor. 1 Battery & charger (If you select “NO battery” the battery? Charger is not included). 36V 250/350/500W about 20-35km/hour. 48V 1000W about 45-55km/h. (different wheel size, road&weather condition and rider’s weight will have different speed). Brushless gear Hub Motor for 36V. Brushless Non-gear Hub Motor for 48V. Rim: Double-wall Aluminium Alloy Rim. Wheel Bottom bracket: Rear 135mm-142mm or Front 100mm. 25-35NM for 36v 250W 350W 500W. 320 for 36V 250W 350w. 350 for 36V 500W. 470 for 48V 1000W. 540 for 48V 1500W. 36V 15AH Battery and 2A charger. Connector for Controller: XT60. Composed Type: 10Series 6Paralles 10S6P. Cells: Powerful 18650 3.7V 2500mAh 10A 5C Cells. BMS: 20 Amp continuous 50±10Amp maximum. Fit Motor Power : 36V 250W 350W 500W. Charge Cut-off Voltage: 42V. Discharge Cut-off Voltage: 30V. Discharge Temperature: -20 to 65°C. Charge Temperature: 0 to 45°C. Battery Weight: 3.7kg. Cycle life:? 80% capacity after 800 cycles. 48V 12.5AH Battery. Composed Type: 13Series 5Paralles 13S5P. BMS: 30Amp continuous 100±10Amp maximum. Fit Motor Power : 48V, 500W, 750W, 1000W. Charge Cut-off Voltage: 54.6V. Discharge Cut-off Voltage: 39V. Composed Type: 13Series 4Paralles 13S4P. Cells: Powerful 21700 3.7V 4500mAh Cells. BMS: 40Amp continuous 100±10Amp maximum. Fit Motor Power : 48V 250W-1500W. Battery Weight: 4.77kg. Cells: Powerful 21700 3.7V 5000MAH Cells. Battery Weight: 5.73kg. Your satisfaction is our top priority and we are confident that you will be pleased with our services. Our Factory and Warehouse.