This photo demonstrates the difference between the Rubicon Manufacturing's Extreme Duty monotube shock and the factory units. R.E. tunes these shocks specifically for each application to deliver maximum control while not compromising ride quality, high-speed stability, or comfort. We like these shocks because they feature good-sized (46mm) metal velocity-sensitive pistons and solid nitro-steel piston rods. No chrome to chip or peel like other shock shafts. Additionally, these units are U.S.-built and feature Viton seals, robotic welds, a durable powdercoat finish, and they are available with remote reservoirs. Oh, and they come with a lifetime warranty.