Perfectly matched system of lift springs and shocks for maximum travel and performance 2.5" of lift or leveling for your Truck Manufactured using race winning off-road race spring technology Developed to provide balanced ride quality control and off-road capability Made In U.S.A. Million-Mile Warranty Download the Installation Guides: Eibach Installation File #1Eibach Installation File #2Eibach Installation File #3 Compatible Vehicles Year 1999 to 2006 Make CHEVROLET/GMC Model Silverado/Sierra 1500Fleetside Bed 2WD | Excludes SS Front +2.5 in Rear +0-1 in Includes Pro-Truck Lift Springs and Pro-Truck Sport Shocks.