2007-2018 JK 4" SST Coil Spring Lift Kit (69-6400)Description ReadyLift has dedicated almost a decade of engineering to this high quality, off road coil spring lift kit. This well engineered kit delivers increased stance and suspension articulation with an increased spring rate, so you never have to worry about settling or sagging from any added weight. Increased ground clearance allows you to install larger wheels and tires, all while maintaining that factory ride comfort on the street and improving