Every Rock Krawler coil spring is designed to be of the highest possible quality, and the Rock Crawler Rear Coil Springs for 5.5in Lift are no exception to that rule. These coil springs have been preset to minimize any possible settling. They will provide your with the ultimate in off-road performance and will give you a high-quality ride. The Rock Krawler Rear Coil Springs 5.5in Lift improve your ground clearance which in turn give you better off-road capabilities for any adventures you plan to take. This set includes a pair of coil springs.