MFG RV Bumper Bike Rack Carrier Hitch Receiver Adapter for 4" Square RV Bumpe...
MFG RV Bumper Bike Rack Carrier Hitch Receiver Adapter for 4" Square RV Bumpers Bike Cargo Coachman. This Heavy-duty U-Bolts onto a 4" square RV bumpers and accepts 2" cargo carrier and bike rack tubes.