Designed as a complete system, this 3" lift includes everything necessary to properly lift your new Wrangler JL while allowing clearance for 35-37" tires. The extra ride height comes from a set of replacement JL-specific coil springs at each corner. These springs are engineered for additional ride height, improved suspension articulation, and to provide an custom-tailored "spring rate" to compensate for the mass of aftermarket wheels/tires and extra gear / off-roading equipment. In additional to replacement coil springs and shocks, this kit includes front lower control arm cam washers to correct caster alignment. Extended-length, heavy-duty front and rear sway bar links are supplied to correct sway bar geometry, while bump stop extensions limit suspension up-travel. Wrapping up this kit is a heavy-duty rear track bar bracket, used to re-center the rear axle and all the necessary hardware required to complete the full install.