2500 SXT 4WD 2008, Standard Series Class 1 Front and Rear Suspension Lift Kit with 3.5"-4" Front and 2" Rear Lift Height (D2513K-H) by Skyjacker. Max Tire Size: 33"x12.5". Skyjacker is the name to consider when it comes to upgrading your suspension system. Opt for top-notch suspension components offering a dramatic change in your vehicles performance.