Building from the bulletproof platform that Slam Specialties is known for, we are pushing the envelope again with the SS Series. Engineered composites, T-6061 CNC Billet Aluminum threads and port, Integrated Bump Stops, updated profile design, Slam Specialties Exclusive Non-Ballooning bellows and plate design, 250psi Rating, and greater travel, are all standard features on the SS series. All of these features combine to offer the highest in performance while saving you weight. The SS Series comes in at 40% lighter than the same size RE series Air Spring.