Abstract: A retrofittable, removable enclosure assembly for a motorcycle, capable of use at and below highway speeds is provided. The enclosure assembly includes first and second pairs of detachable upright supports adapted to be substantially rigidly coupled to a forward and rearward guards of a motorcycle, a disassemblable frame element forming a rectangular tubular frame having forward and rearward pairs of supports adapted to removably engage respective detachable supports, a pair of angular supports adapted to removably and slidably engage the rectangular frame and the rearward pair of supports. A fabric cover component is adapted to be removably affixed to the rectangular frame and the windshield of the motorcycle. The fabric cover can be employed to provide top, top and front protection or to enclose the entire passenger region of the motorcycle. The enclosure assembly is also provided in a kit form.