Equip your semi truck to be Ready for the Road Ahead™, with the Hendrickson Tie-bar Bolster Spring Service Kit, a key assembly that boosts vehicle performance in rugged and tough conditions. With a specially-engineered design, this replacement kit is able to improve suspension performance by enhancing the bolster column stiffness and effectiveness when the axles are misaligned. Manufactured with proprietary rubber compounds to enhance overall ride quality and stability for extensive periods of time. FleetPride is your First Click in Heavy Duty®.