The CURT Hitch Adapter 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. Built with exceptional strength and designed to be precisely fitted for its application, this CURT receiver adapter/extender converts a 2″ x 2″ receiver tube opening to a 1-1/4″ x 1-1/4″ opening. It installs easily and provides 4″ of extra clearance for a bumper or spare tire. It has a gross trailer weight capacity of 3,500 lbs. and a tongue weight capacity of 350 lbs. This CURT adapter has a durable black powder-coat finish to ensure excellent rust, chip, and UV resistance.
• Adapts a 2″ receiver tube opening to fit a 1-1/4″ shank
• Extends receiver tube by 4″ for added clearance
• CNC-formed, robotically welded, and mechanically descaled for a perfect fit
• Protected by a durable powder-coat finish
• Gross Trailer Weight: 3,500 lbs.
• Tongue Weight: 350 lbs.
Before You Order
Verify part number 45770 exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify 45770 on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.




