Firestone Industrial developed its heavy-duty Level-Rite air spring suspension to help level the front end of 2003 to 2008 Dodge Ram 2500/3500 4x4s that carry a winch, snow plow, Texas Style bumper or any other configuration that puts extra weight on the front of the vehicle. Level-Rite pairs a reversible-sleeve air spring with a high-performance Bilstein monotube shock absorber. The subsidiary of Bridgestone Firestone says it is designed to reduce suspension fatigue by preventing factory torsion bars from sagging under heavy loads. The "no-drill" installation is said to take less than an hour.