Universal tilting base compatible with all SuperClamp hitch racks Upgrade your non-folding/tilting SuperClamp or convert your SuperClamp 4-bike to a 2-bike Compatible with 4025, 4025C, 4025F, 4026, 4026F Works with 1-1/4` and 2` receivers Hitch pin and hardware sold separately UPGRADE BASE ONLY - not a full hitch rack 2 Bike Tilting Base Only 1-1/4 or 2` BlackUPC/EAN/GTIN: 012527020317