The Link Manufacturing 52K Air Link Gen 3 Tandem Drive Suspension is designed to meet the needs of states, municipalities, and road maintenance contractors using tire chains on heavy vocational equipment with 315 tires. The suspension features large, high-volume, low-frequency air springs to deliver a smooth ride whether the vehicle is under load or empty. Dual height-control valves maintain proper ride height, leveling the vehicle independent of load and maximizing its roll stability. The suspension has been designed with a lower number of moving parts, extra-large bearing surfaces, more brawny main components, and a higher level of load-bearing redundancy. Once wheel alignment is set on the Air Link, no future adjustments are required, the company says.