Heavy Metal Suspensions - 2000-2010 Chevrolet Silverado and GMC Sierra 1500HD, 2500HD, 3500HD (2WD 4WD) Adjustable 1" to 3" Front Torsion Keys + Shock Extenders High Strength Carbon Steel Lift Kit DETAILS: Adjustable 1 to 3 Inch Front Lift APPLICATIONS: 2001 - 2010 Chevrolet Silverado / GMC Sierra 1500HD (2WD 4WD), 2000 - 2010 Chevrolet Silverado / GMC Sierra 2500HD (2WD 4WD) and 2000 - 2010 Chevrolet Silverado / GMC Sierra 3500HD (2WD 4WD) PACKAGE CONTENTS: (x2) Carbon Steel Adjustable Torsion Keys, (x2) Carbon Steel Shock Extenders and Installation Instructions TIME FRAME: Installs In Approximately 1 - 3 Hours. Heavy Metal Suspensions products are the safest way to lift your vehicle without compromising ride quality. CNC constructed with computer programmed pulse welds, Heavy Metal high-grade steel is guaranteed never to break under even the toughest conditions. Each kit comes complete with installation instructions and ASE certified telephone support.