The Superlift 4" suspension system for the Jeep Wrangler TJ platform is packed with an impressive host of features starting with American Made coil springs that are pre-set (fully compressed and stressed) during the manufacturing process to minimize settling. Also included in this kit are new front & rear lower control arms this is important as these new arms retain the proper factory camber/caster angles of your suspension. New front and rear anti-sway bar links, a rear track bar extension bracket, longer bump stop extensions and transfer case lowering brackets are included as well. Throw in a new set Bilstien Shocks valved and tuned exclusively for the SuperLift 4" Suspension Lift kit and you can see why this is one of the best selling suspension systems on the market!