1500 SLT 4WD 2006, Standard Series Class 1 Front and Rear Suspension Lift Kit with 2.5"-3.5" Front and 1.25" Rear Lift Height (D301MK-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.