Keeping you are Ready for the Road Ahead , the HD Value Air Spring 64260/1R12-095/8311 offers a quiet, stable ride experience during changes in the vehicle’s weight, which are caused by load fluctuations. With heavy duty rubber bellow with more than 300 psi burst pressure, there is minimal wear and tear due to the vibrations of load fluctuations being isolated. With isolated vibrations, drivers’ comfort is enhanced by reducing fatigue and increasing attentiveness. This heavy duty air springs are built for maximum safety, durability, and quality. FleetPride is your First Click in Heavy Duty .