1999-2004 Grand Cherokee Coil Spring Rear Grand WJ Medium (ARB2944)Description Old Man Emu coil springs are engineered using state of the art micro alloyed spring steel, providing superior resistance to sagging and corrosion over the long term. With an extensive range covering multiple load ratings for each application, you can match the spring rate to your specific usage whether that's recreational driving, daily commuting, or commercial load carrying. While lift is achieved, the emphasis is firmly on ride quality