Amazon.com: Dual Hitch Extension for Bike Rack and Towing 2" : Automotive
Kuat Hi-Lo 2" Hitch Extension | Jenson USA
Amazon.com: Kuat Hi-Lo Pro 2" Hitch Extension, 10" Extension, 2 1/8" Rise/Drop : Automotive
2" to 1-1/4" Hitch Adapter
Receiver Hitch Adaptor - 4 Inch Extension – VelociRAX
2 Inch Hitch Accessory Swing Away Arm Adapter – Saris
Reese 2-in Dual Hitch Extension in the Trailer Hitch Ball Mounts department at Lowes.com
Amazon.com: Towever 84131 Trailer 2 inches Dual Hitch Receiver Adapter Extender for Towing and Riser for Bicycle Rack, Extra Long Towing Accessories : Automotive
Amazon.com: 18 Inch Trailer Hitch Extender, 2-inch Trailer Hitch Receiver Adapter, GTW 3500lbs/TW 350lbs, Trailer Hitch Extender for Bike Rack/Trailer/Truck/Cargo Carriers (Hitch Pin and Clip Included) : Automotive
4000lb Dual Hitch Extension 2" Receiver Tow Trailer Haul Bike Rack Cargo Carrier | eBay