Motor size: 11 inch. Power: 1600W 2800W 3000W. Tyre model: Off-road tyre/ Road tyre. Applicable to: 5800W Dual Drive Scooter. Note: for this one motor, the 11 inch size is the motor with tyre size. Not the tyre, only this one hub is not 11 inch. Hope you can check the size before you order it. 1 motor (With tire).