Softride® springs use only American steel and the individual leafs of each spring 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 spring. Without this shot-peening procedure, the maximum wheel travel and ride quality could not be achieved without sacrificing the life of the spring. Softride® springs use bolt style spring clips, eliminating friction. Other spring designs use the cinch style bend clips which bend tightly over the spring leafs causing binding and friction. Skyjacker® Softride® springs taper over the entire length of the leaf creating more flex at the leaf ends. This tapering distributes loads more evenly over a greater area and reduces the tendency for one leaf to dig into the leaf above it.This Part Fits: Year Make Model Submodel 2007-2008 Ford F-150 FX2 2004-2008 Ford F-150 FX4 2006-2008 Ford F-150 Harley-Davidson Edition 2005-2008 Ford F-150 King Ranch 2004-2008 Ford F-150 Lariat 2008 Ford F-150 Limited 2004-2008 Ford F-150 STX 2008 Ford F-150 THE 60TH ANNIVERSARY EDITION 2004-2008 Ford F-150 XL 2004-2008 Ford F-150 XLT
