Supreme Suspensions - Hummer H3 Leveling Kit 2" Rear Steel Shackles Suspension Lift 4WD 4x4 PRO FITMENT: 2006 - 2010 Hummer H3 (4WD). CONTENTS: 2x Rear Carbon Steel Shackles, Installation Hardware, Installation Instructions and Pro Pack. INSTALLATION: Easy 'bolt-on' installation takes 1 - 2 hours. No special tools are required. TECHNICAL NOTES: Designed to lift your ride 2 inches. Maintains factory ride quality. BENEFITS: Improves the look of your vehicle and increases ground clearance, so you can fit larger custom rims and tires. Factory shocks can be reused. (2x) Rear Carbon Steel Lift Shackles Installation Instructions Supreme Suspensions Pro Pack