CURT hitch adapters can be used for many different purposes when hitching up a trailer. Whether a ball mount shank is too small or too large to fit into a receiver tube, a CURT adapter can make up the difference. Our adapters are built with exceptional strength and designed to be precisely fitted for their application. We carry trailer hitch adapters to accommodate both receiver tube openings and shanks of 1-1/4", 2" and 2-1/2" dimensions. CURT adapters also come in various lengths to allow more clearance for a cargo carrier, bike rake or spare tire. This specialized CURT receiver adapter converts a 2-1/2" x 2-1/2" receiver tube opening to a 2" x 2" opening. It offers a gross trailer weight capacity of 4,500 lbs. and a tongue weight capacity of 450 lbs., and when combined with a weight distribution hitch, it offers 6,000 lbs. GTW and 600 lbs. TW. It also has the option to be cut down fro