Upgrade your SuperClamp rack to tilting/folding style for tighter storage and bike-on hatch access. Also, take your 4-bike SuperClamp down to a 2-bike version for a compact lightweight option. Features: 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 compact folding/tilting one