Installing the Superlift Level-It torsion keys will both level your truck and provide increased ground clearance. When the keys are loaded, the hex-cut or "splined" holes apply torsional load to the torsion bars resulting in 1.5" to 2.5" of adjustable lift. The Superlift keys are indexed differently from factory keys to achieve this. This additional front lift is ideal to restore height that may have been lost with the addition of a heavy front bumper or winch combo. No need to replace your front shocks. Front shock spacers are included.Kit FeaturesAllows the use of plus-size wheels / tires Easy installation and removal Enhances appearance by leveling the stance of the vehicle Front shock spacers included Lifetime Warranty Satisfaction Guarantee