Supreme Suspensions - 2007 - 2018 Chevy Silverado GMC Sierra 4WD 3.5" + 1" Full Lift Leveling Kit w Differential Drop FITMENT: "New Body Style" 2007 and 2008 - 2018 Chevy Silverado 1500 + GMC Sierra 1500 4WD (6-Lug Models Only) CONTENTS: 2x Front Billet Upper Mount Strut Spacers, 2x Front Delrin Lower Mount Strut Spacers, 2x Rear Billet Lift Blocks, 4x Extended Zinc Plated U-Bolts, 1x Differential Drop Kit, Installation Hardware, Installation Instructions and Pro Pack. TECHNICAL NOTES: 3.5 Inch Front Suspension Lift + 1 Inch Rear Suspension Lift INSTALLATION: Easy 'bolt-on' installation. No special tools required. BENEFITS: Improves the look of your vehicle and increases ground clearance, allowing you to fit larger custom rims and tires. Factory shocks can be reused.