Supreme Suspensions - 4WD Ford F150 Lift Kit 1.5" Rear Lift Carbon Steel Blocks + U-Bolts FITMENT: 2004 - 2010 Ford F150 (4WD). CONTENTS: 2x Carbon Steel Rear Lift Blocks, 4x Extended Zinc-Plated U-Bolts, Installation Hardware, Installation Instructions, and Supreme Suspensions Pro Pack. TECHNICAL NOTES: 1.5 inch rear suspension leveling lift. Factory shocks can be reused without compromising ride quality. Please note that this kit contains 3 inch blocks that are intended to replace the 1.5 inch blocks that were installed at the factory, resulting in a 1.5 inch lift for your 4WD F150. INSTALLATION: Easy bolt-on installation takes 1 to 2 hours without the need for special tools. An alignment is recommended after install. BENEFITS: Improves the look of your vehicle and increases ground clearance, allowing you to fit larger custom rims and tires.