Skyjacker Softride Series Add-A-Leaf 1-1/2 in Lift Rear Helper Spring Kit - Black Paint - Ford Fullsize Truck 2008-14 - Pair 1950791 The linear rate provides consistent

The linear rate provides consistent handling characteristics which are important for Auto-x and Pro-Tour applications while the increase in stiffness reduces body roll and prevents the "floating" feeling so common with the A-body

Manley Sportmaster connecting rods are forged from aircraft quality 4340 steel

1959-1959 Studebaker 4E1

375 in W x 22

2A/15 specification

Skyjacker Softride Series Add-A-Leaf 1-1/2 in Lift Rear Helper Spring Kit - Black Paint - Ford Fullsize Truck 2008-14 - Pair 1950791 The linear rate provides consistentSoftride 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