Fits mini bikes with 10" tire diameter to on/off off-road bikes. Equipped with 1 tire stopper for 1 load. The tire stopper can be installed in any position to fit your motorcycle stack. Fits tire inches sizes 10 inches and up to 130 mm wide. Easy to remove when not in use. Optional tire stoppers are required when loading 2 vehicles. Optional Direct Kit is required if the second row sheet is folded for use. Cannot be installed on vehicles without a second seat.