The Firestone Ride-Rite Air Helper Spring has a capacity of 3,200-5,000 lbs, this air spring is designed to reduce vibration, shock, and noise while driving, enhancing your vehicle's stability and handling. The double convoluted air spring ensures long-lasting performance and reliability, providing a cost-effective and efficient solution for air suspension systems. With an installation time of 1-2 hours, this air helper spring is easy to install and will provide you with a smoother, more comfortable ride. FleetPride is your First Click in Heavy Duty®.