Feature:1. Environmentally friendly materials, durable and easy to operate.2. The kit is suitable for installation on a 22‑28 inch ordinary electric bicycle.3. This kit is not suitable for modification of special models and variable speed models.4. The main structure is light, simple, clear and stable, and will not make your bike lose balancing.5. The motor uses a flywheel. When the wheel rotates, the motor will not rotate, just like an ordinary bicycle, it can reduce resistance.Specification:Condition: 100% brand newItem type: Electric Bicycle Conversion Complete AccessoriesMaterial: aluminium alloyColor: As picture shownWeight: Approx. 4301gMotor: 24V250W advanced geared motorModel: MY1016Z2Rated voltage: 24VRated power: 250WFlywheel teeth: 16Rated speed: 3300 rpmReduction ratio: 9.78Controller:Voltage: 24VPower: 250WUndervoltage: 20 positive and negative poles 0.5VThrottle grip: 1-4VProduct function introduction:1.16 tooth flywheel + 34mm flywheel connector2. Charging port3. Lamp: a three-in-one lamp for battery display, horn, and headlight (Note: The screw to fix the lamp needs to be provided by the buyer)4. Motor: 24V250W advanced geared motor5. Controller: 24V250W controller6. Chain: 38-section special chain7. Plastic insert, copper insert8. Speed control throttle grip: A set of four speed control handles9. Bracket: One piece of geared motor bracketPackage List:1 x Motor 1 x Controller1 Set x Chain + circle tube1 x Battery indicator light1 x Electric door lock2 x Key1 x Gear 1 x Bracket sheet1 Pair x Throttle grip1 Pair x Brake1 x Charging port1 x Connector1 Bag x Screw 1 Bag x Accessories