Abstract: A floating trunk storage compartment for three wheeled motorcycles provides waterproof storage without the need and associates expenses of a trailer. The floating trunk storage compartment includes a receiver hitch bar to fit into a receiver hitch of the motorcycle. The floating trunk storage compartment rides behind the motorcycle, off the ground, to provide significant storage space. Without the wheels, bearings, axles and other components associated with a conventional trailer, the floating trunk storage compartment can easily be removed and stored or put into service on the back of the motorcycle.