MaxTrac Suspension 413710 provides 1" rear lowering shackles for your 1999-2016 Ford F250 Super Duty. MaxTrac offers up rear lowering shackles as a sure fire way to get the back end of your truck out of that stink bug stance. These shackles give a minor drop in the rear, depending on appplication, anywhere from 1/2" to 2". Get your truck sitting level in an hour, easily installed, and of better quality than the OE parts being replaced. Constructed of solid steel, urethane bushings, and powder coated in gunmetal, these give you the look you're after.