Rise above the pack and install a 7-8" lift kit on your GM 2500HD/3500HD and equip your truck with a dominant stance both on and off the road. A 7-8" lift kit is the perfect way to give your truck impressive off-road capability with the ability to fit massive wheel and tire combos. Many of our lift kits include performance-enhancing shocks, coilover packages, springs, radius arms, sway bar links, track bars, and more. Discover your ideal aftermarket solution at Alligator Performance! If you're looking to transform your bone-stock truck into a fully-fledged off-road powerhouse, be sure to find a nice set of Wheels & Tires that compliment your monstrous lift kit!GM Duramax Fitments: 2001, 2002, 2003, 2004 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.