Keeping you Ready for the Road Ahead™, the ContiTech Air Spring 64383/1R12-580/8448 achieves constant and low natural frequency between tare and full load. This ensures effective cargo protection, even on poor road surfaces, excellent comfort and health protection for the truck driver, and safe driving conditions. These air springs also offer the ability to lower or raise the truck's body height to match a ramp's elevation or to set up a compatible platform. Whether you need cab, truck or trailer air springs, FleetPride has the heavy duty air bags you need for a quiet, stable ride. We know you need quality suspension and steering parts to reduce wear and tear and ultimately, downtime. FleetPride is your First Click in Heavy Duty®.