Chopper bike is also called chopper motorbike, chopper scooter, harley scooter, harley chopper, western chopper, it is a kind of long frame motorcycle, it is developed by following Western Harley Davidson style, but totally different from Harley scooters, they are of smaller size, equipped with 2 stroke or 4 stroke engine, displacement can be 49cc, 110cc, 150cc.