These Curt RV Hitches are designed to extend greater lateral distances and bolt to the trailer's frame rails. You'll probably have to drill the TT frame to accommodate the receiver, but you should be able to have it fit below the existing bumper.
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rirish1 wrote: This is how I solved the problem. An adjustable receiver welded to my TT frame. I've hauled 2 bikes to Alaska and back as well as numerous other trips without problem. It is available on etrailer.com
Curt Adjustable Trailer Hitch Receiver - 18"-51" Wide - 2" Drop - Class III - 2"