1 1/4" hitches are not the best for hitch accessories. My wife had an Escape with an 1 1/4' hitch and we bought a hitch-mounted bike carrier for it. They were very unstable and moved around a lot. It started wearing on the hitch and carrier as well. Just doesn't have enough UMF to do the job. I guess it would work better if you use straps or tie downs from the front and back tires of the bikes to the vehicle.
2013 Jayco Eagle 328 RLTS
2012 Ford F250 6.2L 4x4 CCSB W/Air Lift air bags
2002 Coleman Bayside Elite (traded)
Me, Momma and Charles (RIP buddy)
And introducing Sofie!! ;)