Kryptonite leveling kits are the fastest, safest, least expensive way to bring the front of your GM HD Truck 2 inches closer to the rear. Our torsion keys are designed to grab the "FLAT" for a tighter, sturdier fit. Kryptonite torsion keys are forged, making them 25% stronger than OEM and primed to last the life of your vehicle. The adjustable torsion key provides 1" to 2" of lift and gives clearance to add up to 34" wheels and tires to your GM HD Truck. Designed to keep the OEM ride and will not add more pressure on the stock suspension components. Through our innovative engineering, these kits cost thousands less than a traditional lift kit.