Firestone 9000 Tapered Sleeve Air Spring provides dependable suspension solutions. This air spring mounts amid the frame and the suspension. It is an ISO certified automotive tapered sleeve air spring. This air spring enhances the drive quality while empty or loaded. This tapered style air spring will help 1,500 pound. It features 8.25 inch drive height, 0.25 inch NPT air inlet and compressed height of 6.25 inch.