Features: Size is 20x4.0. Comes with 1 Wheel & Rim Assembly suitable for front or rear use. It has an aluminium construction and stainless spokes. Equipped with a 48V 500W Bafang Hub Motor. Rear assemblies include a Shimano 7 Speed Freewheel Cassette. Does not include Motor Wiring Loom, Discs, Tyres/Tubes. Needs a 500W or 750W Rated controller to operate. It's a compatible replacement for 20 - inch Ampd Bikes.

Using this motor and wheel assembly is easy. First, make sure you have a 500W or 750W rated controller as it's required for operation. Install the assembly on your bike, either at the front or rear as it's suitable for both. Keep in mind that it doesn't come with motor wiring loom, discs, tyres, or tubes, so you'll need to get those separately. When using, be careful not to overload the motor. For maintenance, regularly check the aluminium construction and stainless spokes for any signs of damage or wear. Also, make sure the Shimano 7 - speed freewheel cassette is in good working condition.