Liftcraft - 2007 (New) - 2018 Silverado Sierra Lift Kit 1500 3.5 Inch Front Aircraft Billet Upper and Lower Strut Spacers 2WD 4WD | Leveling Kit (Black) LIFT: 3.5 inch front lift over stock FITMENT: 2007 - 2018 Chevrolet Silverado 1500 2WD + 4WD and 2007 - 2018 GMC Sierra 1500 1500 2WD + 4WD | NOTE: Will only fit 6-lug models MATERIAL: Premium 6061T6 aircraft aluminum spacers with ideal strength and weight INSTALLATION: Bolt-on kit, only takes a couple of hours to install; No modifications required CONTENTS: Aluminum Strut spacers (2), Aluminum Bottom Strut Spacers (2), Hardware and Detailed Instructions - Liftcraft suspension lift and leveling kits come with a lifetime guarantee and are the easiest, safest, and most affordable way to improve the look of your truck and run bigger tires