For those looking to transform the stance and boost the off-road performance, handling, style, and comfort of their GM 2500HD/3500HD, our selection of 3-4" lift kits is the perfect solution. The added clearance allows you to easily fit larger tires and wheels, upgrading both the capability and appearance of your truck. Many of our lift kits include essential components like coilovers, springs, control arms, sway bar links, radius arms, and more. Elevate your truck with the 3-4" lift kits available at Alligator Performance. Pair your new lift kit with our excellent selection ofWheels & Tires. GM Duramax Fitments: 2004, 2005 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.