Kryptonite Stage 3 Leveling Kit With FOX 2.5 HTO Shocks 11-19 GM 2500HD/3500

If you're ready to level out the stance of your Duramax LML or early L5P and want the strength and ride quality to match, the Kryptonite Stage 3 Leveling Kit with FOX 2.5 Performance Series shocks is a serious upgrade for daily drivers, weekend warriors, and workhorses alike. Whether you're clearing room for 34" tires, eliminating that nose-down factory rake, or just want a stronger, smoother ride, this kit delivers in every way.

At the heart of the system are Kryptonite’s forged torsion keys. These keys are designed to grab the hex surface of the torsion bar with a tighter, sturdier fit and provide up to 2" of lift without adding pressure to your stock suspension components. Built 25% stronger than factory and corrosion-resistant, they’re built to last for the life of your truck. Complementing the keys are Kryptonite’s boxed upper control arms, laser cut, expertly welded, and proudly made in the USA. These UCAs improve alignment, strength, and suspension travel whether you’re stock height, leveled, or lifted.

The Stage 3 kit steps it up further with FOX Performance Series 2.5 HTO (Hydraulic Top Out) shocks. These aluminum-body shocks are precision-tuned with internal floating piston technology, which separates oil from the high-pressure gas chamber to eliminate aeration and ensure maximum damping performance. They’re designed to give you a comfortable, controlled ride on the road while holding their own through rough terrain, towing loads, or hauling gear.

For those operating in harsh climates or dealing with worn-out factory hardware, the optional Kryptonite cam bolt kit is a smart add-on. It’s especially recommended for high-mileage trucks and allows proper front-end alignment, as long as your upper control arms remain in the stock location. Also available is the alignment pin kit, which replaces bent or crushed factory pins and simplifies the alignment process. This set makes it easier to dial in your suspension geometry after the lift is installed.

Whether you’re after better handling, more clearance, or just want to upgrade tired factory components, the Kryptonite Stage 3 Leveling Kit with FOX shocks brings the ride, the reliability, and the rugged performance you need.