The Hendrickson HAULMAAX EX features a unique spring design that balances empty-ride quality and loaded stability. Angled bolster springs and a progressive load spring provide stability for demanding applications. As the load increases, ride and stability characteristics of the suspension change to meet the application’s needs without an abrupt change in suspension feel. The superior ride translates to reduced road shock and vibration to the vehicle which contributes to longer service life of the cab, chassis, and body equipment, as well as less driver fatigue. The HAULMAAX EX is available in capacities of 40,000, 46,000, and 52,000 lbs.