Holding true to the use of only American steel, Skyjacker Rock Ready leaf springs for the Jeep Wrangler YJ are an excellent choice. Double military wrap adds extra strength for off road adventurers. Shot-peening of each individual leaf compresses the surface of the steel thereby increasing the tensile strength to provide maximum wheel travel and ride quality without sacrificing the life of the spring. Rock Ready springs use bolt-style spring clips, eliminating friction. To achieve this superior ride quality, Rock Ready springs taper over the entire length of the leaf creating more flex at the leaf ends to distribute loads more evenly over a greater area. This reduces the tendency for one leaf to dig into the leaf above it.