The TJ rear upper shock bar pin eliminator kit increases your shock options by eliminating the need for a bar pin. Bar pins have the tendency to become loose and allow the shock eyelet to move side to side reducing shock effectiveness. The bar pin eliminator converts the shock to a traditional captured shock mount - and you can now forget about replacing broken bar pins. The eliminator kit installs in the place of the factory bar pin and includes adapter brackets, shock sleeves, and all necessary hardware.