Get a killer, level look and run up to 295/55R20 tires with Rough Countrys 1.5 - 2- in. Leveling Suspension Kit for 11-16 GM HD models. This torsion bar leveling kit features a set of durable, forged torsion keys that level the front of your truck with the rear. Forged torsion keys are much stronger than cast, and ours are ready to stand up to the elements and take whatever you can dish out. Installation is a c in., so youll be ready and rolling in no time.Features and Benefits10-Stage Variable ValvingHigh Pressure Nitrogen Charged35mm PistonChromed Hardened 18mm Piston Rod54mm Shock Body To Dissipate Heat Faster36kN Tensile StrengthSpring Loaded Piston Rod SealMilitary Spec. Fluid Rated To 40 Deg. CRubber Bushings For Better AbsorptionMetallic Silver PaintFree Shipping3-Year Manufacturers WarrantyApplication Summary2011-2019 Chevrolet Silverado 2500 HD (Front) (Drive: 4WD / Note: 1.5-2 in.; Leveling Torsion Bar Keys;Front w/1.5 - 2 in. Lift2011-2019 Chevrolet Silverado 3500 HD (Front) (Drive: 4WD / Note: 1.5-2 in.; Leveling Torsion Bar Keys;Front w/1.5 - 2 in. Lift2011-2019 GMC Sierra 2500 HD (Front) (Drive: 4WD / Note: 1.5-2 in.; Leveling Torsion Bar Keys;Front w/1.5 - 2 in. Lift2011-2019 GMC Sierra 3500 HD (Front) (Drive: 4WD / Note: 1.5-2 in.; Leveling Torsion Bar Keys;Front w/1.5 - 2 in. Lift)