Liftcraft - Adj. 1" - 3" Front + 1" Rear Lift Kit For 1997-2007 GMC Sierra 1500 4WD | Torsion Keys + Lift Blocks + Shock Extensions + Axle Shims + Unloading Tool GMC Leveling Kit (Steel + T6 Billet) LIFT: 1-3 inch adjustable front and 1 inch rear suspension lift over stock FITMENT: 1997 - 2007 (classic) GMC Sierra 1500 6-lug 4WD models MATERIAL: High Strength Steel Torsion Bar Lift Keys, Shock Extenders and Unloading Tool | 6061-T6 Billet Aluminum Lift Blocks and Axle Shims 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), Billet Aluminum Axle Shims (2), Steel Torsion Bar Unloading Tool (1), 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