The Zone Offroad 4" lift kit for the Jeep Wrangler TJ, Unlimited features front and rear coil springs designed to handle all the abuse you throw at them. The true performance of this kit is attributed to the coil springs. Also incuded are front & rear sway bar links with urethane bushings that increase performance and reduce body roll. A rear track bar relocation bracket, transfer case drop to correct driveline angles, 2" bump stop extensions, four new massive greasable lower control arms made from 1-3/4" x 1/4" wall DOM tubing, rear pinion cam plates to correct drive line angles and 4 Hydro shocks specifically valved for your vehicle complete the package. Shock boots sold separately.