The 18" Combo Bar with 2-1/2" Trailer Hitch Receiver - Unpainted # C49511 is designed for hitch fabrication and will not fit inside your 2-1/2" receiver as it is the same side of the receiver.
We do have a Trailer Hitch Reducer and Extender # HR26 which fits your 2-1/2" receiver and will extend the hitch pin hole out 7" to a 2" receiver. Currently all of our 2-1/2" extenders are also reducing the receiver to a 2" opening. The adapter will reduce your receiver capacity by 1/3rd and gives... view full answer...