Liftcraft - 1" - 3" Front + 1" Rear Lift Kit for Silverado 1500HD 2500HD 3500HD 8-Lug 2WD 4WD | Carbon Steel Adj. Torsion Bar Lift Keys + T6 Billet Lift Blocks + Shock Extenders Leveling Kit LIFT: 1-3 inch adjustable front and 1 inch rear suspension lift over stock FITMENT: 2001 - 2010 Chevrolet Silverado 1500HD 2WD + 4WD, 2000 - 2010 Chevrolet Silverado 2500HD and 3500HD 2WD + 4WD models | NOTE: Will fit 8-Lug models only MATERIAL: High Strength Steel Torsion Bar Lift Keys and Shock Extenders | 6061-T6 Billet Aluminum Lift Blocks INSTALLATION: Bolt-on kit, only takes a few hours to install; No modifications required CONTENTS: Carbon Steel Torsion Keys (2), Aluminum Lift Blocks (2), Extended U-Bolts (4), Carbon Steel Shock Extenders (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