The new trike adapter trk-e20 forthe sport rider for electric bikes is an adapter that allows users to carry one e-trike and one e-bike. this is an add on to the hr1500, not a standalone trike rack. - For use on a 2" (class iii) hitch only. do not use a 1-1/4"-2" adapter - Not to be used on any rv, travel trailer, 5th wheel or towed vehicle - Not to be used with any hitch extender - Not to be used with a bike cover Specifications - Max weight, max wheelbase, and max track width: - Max trike weight: 90 lbs. - Max bike weight: 80 lbs. - Max combined weight: 170 lbs. - Max wheelbase: 60" - Max track width: 36"