The kit is design to replaces all stock suspension mounting points. Polyurethane is twice as durable as stock rubber bushings and won't corrode and wear like the factory set-up. The complete kit comes with the full bushing kit and steel sleeves. For use with stock style shackles or extended straight shackles. Not for use with vehicles equipped with our 2" Shackle Reverse. Please see the SS1557 for the correct replacement bushing kit.