Full Speed:about 20-35km/hour, (different wheel size, road&weather condition and rider's weight will have different speed) 2. Hub Motor: Brushless gear Hub Motor 3. Rim: Double-wall Aluminium Alloy Rim 4. Wheel Bottom bracket: Rear 135mm-142mm or Front 100mm 5. RPM: 250W 350W for 320, 500W for 350.Packing List Noted:Battery not included 1 Front or rear Motor wheel(20/24/26/27.5/28/29inch 700C) 1 DC Controller 1 Controller Bag 1 pair Power cut-off Brake lever 1 set Twist Throttle with LED Display 1 8 Magnet Pedal Assistant Sensor 1 7 speed Thread freewheel 1 160mm Disc brake. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Electric Bicycle Components". The seller is "lightinbike18" and is located in this country: CN. This item can be shipped worldwide.