Supreme Suspensions - GMC Sierra 1500HD 2500HD 3500HD 1" to 3" Front Steel Torsion Keys + 2" Rear Billet Blocks with UBolts Full Suspension Leveling Lift Kit 4x2 4x4 Includes Shock Extenders + Shims PRO Fits: 2001-2010 GMC Sierra 1500HD 2500HD 3500HD 2WD and 4WD Designed to Lift your front end 1 to 3 inches and rear end 2 inches while maintaining factory ride quality Improves Axle alignment and eliminates unwanted vibrations in the suspension Kit includes: 2x Front Max Carbon-Steel Torsion Keys, 2x Rear Pro Billet Lift Blocks, 2x Carbon-Steel Shock Extenders, 2x Pro Billet Alignment shims, 4x Zinc Plated U-bolts, Installation Hardware, Supreme Pro Signature Stickers and Bottle opener