Matched system of lift springs and shocks designed for increased travel and performance Provides balanced ride quality control and off-road capability Manufactured by Eibach using off-road race spring technology and OE quality standards Shocks individually tested for matched performance in each corner 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 2014 to 2018 Make CHEVROLET/GMC Model Silverado/Sierra 1500 Front +2.5 in Rear +0-1 in Includes Pro-Truck Lift Springs and Pro-Truck Sport Shocks. Forged aluminum forged Steel or upgraded aftermarket control arms highly recommended for trucks equipped with stamped steel control arms from the factory.