This kit solves the problem with the coil spring rear suspension when the vehicle is lowered. The rear shocks are angled forward from the factory, and when you lower the truck, the angle increases. For optimum performance, a shock should not be angled more than 15 degrees. This kit lowers the bottom shock mount and brings the upper mount farther back, straightening the angle of the shock. Upper bracket bolts into the original brackets holes and the lower connects in place of the original under the control arm, with the u-bolt. Kit includes all necessary hardware. Note: will not work with rear leaf spring suspensions. SHOCKS NOT INCLUDED