"Use the Black Widow bike carrier to haul a single off-road motocross motorcycle with any vehicle's 2"" Class III or IV hitch receiver. Cannot be used with 1.25"" Class II or smaller receivers. This carrier includes a specially designed hitch tube that folds the entire rack upward for storage between uses. It has a durable steel frame which connect into a trailer hitch for hauling, eliminating the need for a full size trailer to move a single bike. The hitch carrier features a 45.5"" L by 6.9"" W loading ramp and a 75.7"" L by 6.9"" W hauling rack capable of supporting off-road bikes weighing up to 500 pounds with tires up to 7"" wide. Total hauling weight is calculated by adding the total weight of the motorcycle + 99 pounds (MCC-500-F weight). Most Class III hitches are rated for 500 pounds Most Class IV hitches are rated for 1,000 pounds Some vehicles may require air shocks or heavier springs to stiffen up the suspension to prevent sagging. Never exceed the maximum tongue weight rating of your trailer hitch (check the weight sticker on the trailer hitch)."