Shock Absorbers Durable vulcanized neoprene rubber bushings and chrome, plated piston rods provide corrosion resistance, more consistent wear surfaces, proper seal lubrication and longer product life Seamless lubricating fluid and gas reduces excessive friction against the piston rod to help reduce premature wear while heavy-duty nitrocarburized rod delivers long life These shocks perfect for both on and off-road conditions to improve smooth, comfortable ride and maintain ride height These shock absorbers have an adjustable spring perch for lifting, mounting hardware for an easy, direct-fit installation Generally compatible with: 2006-2008 Ram 1500, 2003-2010 Ram 2500/3500, 2011-2013 Ram 2500, 2011-2013 Ram 3500 4WD with a 0-2.5 inch front lift and 0-1 inch rear lift(NOTE: Professional installation would be highly recommended)