Skyjacker 2IN. FRT MET SPCR 07-12FJ CRUI FJ20MS

Separate the half of the suspension that locates the axle under the truck from the half that holds the weight of the truck up. That way you can use a spring that is just stiff enough to support the truck, and use solid steel tubes to locate the axle. The Skyjacker Z-link kit was designed to do just that and replaces the leaf springs on the front of Ford Super Duty trucks to give you a better ride while eliminating any axlewrap.