Liftcraft - 1999-2018 Silverado 1500 2.5 Inch Rear Carbon Steel Add A Leafs Chevy Leaf Lift Leveling Kit LIFT: 1.5 inch rear lift over stock FITMENT: 1999 - 2018 Chevrolet Silverado 1500 2WD + 4WD | Note: *Will Fit 99 - 07 Silverado 1500 Classic 6-Lug Model Only MATERIAL: High-strength steel construction INSTALLATION: Bolt-on kit, only takes a few hours to install CONTENTS: Rear Add-a-Leaf Spring (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