Supreme Suspensions - Full Avalanche Lift Kit 2.5" Solid Aircraft Billet Front Strut Spacers + 1.5" Solid Aircraft Billet Rear Coil Spring Spacers (Silver) Chevy Avalanche Leveling Kit 2WD 4WD 4x2 4x4 FITMENT: 2007 - 2013 Chevy Avalanche 1500 (2WD 4WD). CONTENTS: 2x Solid Aircraft Billet Strut Spacers, 2x Solid Aircraft Billet Coil Spring Spacers, Installation Hardware, Installation Instructions, Supreme Pro Signature Decals, and Bottle Opener. TECHNICAL NOTES: 2.5 Inch Front Suspension Leveling Lift and 1.5 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.