Bilstein 4600 Monotube Gas Shock Set 2009-2013 Dodge Ram 1500 2WD Set of 4 Shocks - Fits 2WD Vehicles Shock boots included with all shocks except in cases of special fitment. Monotube gas charged for longevity, durability, and performance. All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation. Bilstein's Limited Lifetime manufacturer's Warranty protects against defects and premature failure.