Those looking to transform their GM 2500HD/3500HD’s stance and enhance its off-road capability, handling, style, and comfort, our selection of 3-4" lift kits is a perfect choice. With the added clearance, you'll easily be able to fit larger tires and wheels, giving your truck a complete upgrade for both off-road capability and appearance. Many of our lift kits come equipped with components like coilovers, springs, control arms, sway bar links, radius arms, and more! Take your truck to the next level with the 3-4" lift kits available at Alligator Performance. Pair your new lift kit with our excellent selection ofWheels & Tires.GM Duramax Fitments: 2006, 2007 GM 6.6L Duramax.Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.Some exceptions apply, please see individual product pages for specific fitments.