I Have a Rack With a Dedicated 2″ Receiver Bar, but My New Car Has a 1 1/4″ Hitch. Do You Have an Adapter to Covert the Receiver Bar? Philip Cowles March 30, 2018 14:34 Follow We do not make an adapter that will take a 2" receiver base down to a 1 ¼" and using a 3rd party adapter is not recommended. Related articles What Class Hitch Do I Need for My Hitch Rack? Can I Use an Extension on My Hitch to Get the Rack Further From My Bumper? Can I use my hitch rack on my RV/Camper/Trailer or Class B vehicles? Why Does My Hitch Rack Wobble? How should I position my bike when mounted on my bike rack? Comments 0 comments Please sign in to leave a comment.