Abstract: A slidable truck bed extension including a rigid extension plate having a first and second wheel well notch formed into the side thereof and a pair of connecting rails extending from the underside thereof, each connecting rail having a plurality of spaced pairs of upper and lower roller members rotatably mounted thereon; and first and second rail assemblies, each rail assembly including a support rail having a plurality of rail supports extending therefrom, each support rail having a diameter equal to the distance between the upper and lower roller members, each rail support being affixable to the existing bed of a pickup truck. In a preferred embodiment the bed extension plate further includes one or more spring loaded locking pins and one or more of the rail supports include a rail support locking pin aperture formed therein at a location such that the spring loaded locking pin is positionable in registration with and into the rail support locking pin aperture.