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 2006-2010 Dodge Ram 2500 Laramie 2006-2010 Dodge Ram 2500 SLT 2008-2010 Dodge Ram 2500 SXT 2010 Dodge Ram 2500 TRX 2006-2010 Dodge Ram 3500 Laramie 2006-2010 Dodge Ram 3500 SLT 2009-2010 Dodge Ram 3500 SXT 2011-2012 Ram 2500 Laramie 2011-2012 Ram 2500 Laramie Longhorn 2012 Ram 2500 Outdoorsman 2012 Ram 2500 Power Wagon 2011-2012 Ram 2500 SLT 2011-2012 Ram 2500 ST 2011-2012 Ram 3500 Laramie 2011-2012 Ram 3500 Laramie Longhorn 2011-2012 Ram 3500 SLT 2011-2012 Ram 3500 ST