For use with Big Bar Soft Spring set-ups, kit allows adjustment of suspension travel separate from the coil over unit. Bolt kit to the outside of lower control and to an upper chassis location (may need to drill a hole or use a clamp on bracket). 15-1/2" long with 1.5" of adjustment. Fine tune vehicle set-up by adjusting the upper bushing plate. Includes built-in travel indicator and two yellow bushings.