CURT 18030 Extendable Hitch Bike Rack, Fits 1-1/4-Inch or 2-Inch Receiver, 2 or 4 Bicycles Weight Distribution Mounts to a trunnion bar Truck:Bolt-on Torsion Hitch Bracket 2017 King Air NEWMAR 55570 Coupler This particular class 1

CURT 18030 Extendable Hitch Bike Rack, Fits 1 1 4 Inch or 2 Inch Receiver, 2 or 4 Bicycles Weight Distribution Mounts to a trunnion bar Truck:Bolt on Torsion Hitch Bracket 2017 King Air NEWMAR 55570 Coupler This particular class 1 Mounts to a trunnion bar WD hitch head to help level the trailer and tow vehicle Fits CURT trunnion bar weight distribution hitches #17322 and #17332 Pre assembled with spring bar chain for ready attachment Multiple chain links allow for flexible adjustment of tension Constructed from forged steel for optimum strength Protected by a highly durable carbide powder coat finish 2500HD and 3500 trucks (see application info to verify fitment)