2011-2019 GM HD Leveling Key Set (KRKEY11)Lift with Confidence. The Kryptonite Torsion Bar Adjuster Kit is the easiest and safest way to raise the front of your 20112019 GM HD truck up to 2 inches. These forged, re clocked keys are significantly stronger than factory and allow you to level your truck without compromising ride quality. Pair with Kryptonite Upper Control Arms and compatible shocks or extensions for the best possible ride and performance from a leveling kit. Engineered for