Certain factory suspension configurations do not allow the fitment of a stand-alone air spring. In these cases, it is necessary to pair the air spring with the shock absorber to achieve meaningful load capability while maintaining a hassle-free installation. For these applications, Firestone has designed a fully-protected, reversible sleeve air spring and paired it with a high-performance Bilstein monotube shock absorber for perfectly matched performance characteristics over the entire operating spectrum. Level-Rite air spring and dampers will level the front end in variable load applications, allow control of front ground clearance, improve vehicle control and stability, reduce bottoming and reduce suspension fatigue.