The new Trike Adapter TRK-E20 for the 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" INSTALLATION INSTRUCTIONS INSTALLATION VIDEO