Abstract: A transformable truck bed is provided where the bed is enclosed by side walls that are removable so that a gooseneck mechanism could be used without being obstructed by the side walls. When the transformable bed is in the first position, or the base position, the insert side walls are removed. However, the base side walls are permanent and remain in place. Thus, the base side walls do enclose the bed but at a lower height than the insert side walls. In this position the transformable bed is capable of towing a trailer by using a gooseneck mechanism.