Supreme Suspensions - Full Avalanche Lift Kit 3.5" Front Strut Spacers + 1" Rear Coil Spring Spacers (Black) Chevy Avalanche Leveling Kit 2WD 4WD 4x2 4x4 FITMENT: 2007 - 2013 Chevy Avalanche 1500 (2WD 4WD). CONTENTS: (2x) Solid Aircraft Billet Strut Spacers (Upper Mount), (2x) High-Crystalline Delrin Strut Spacers (Lower Mount), (2x) Solid Aircraft Billet Coil Spring Spacers, Installation Hardware, Installation Instructions, Supreme Pro Signature Decals, and Bottle Opener. TECHNICAL NOTES: 3.5 Inch Front Suspension Leveling Lift and 1 Inch Rear Suspension Lift. INSTALLATION: Easy 'bolt-on' installation takes 2 to 4 hours. No special tools are required. BENEFITS: Improves the look of your truck and increases ground clearance, allowing you to fit larger custom rims and tires.