Skyjacker Add A Leaf 2009-2013 Ford F-150 R3940

Skyjacker Leaf Springs & Accessories R3940 Softride« Add-a-leafs use only American steel and are shot-peened with hard steel pellets at very high velocities. This shot-peening compresses the surface of the steel thereby increasing the tensile strength of the leaf. Without this shot-peening procedure, the maximum wheel travel and ride quality could not be achieved without sacrificing the life of the leaf. The Skyjacker« add-a-leafs are pre-drilled for the center pin. Pin location varies with each application. Most have long tapered ends for a progressive affect and ride comfort. ADD-A-LFS 4IN. 09 F150 W/SHIMS Softride Add-A-Leaf; Rear; Lift Height 4 in.; w/Shims; AddALeaf