Air Lift Air Springs 50771 This Air Lift replacement bellows is an exact replacement for your original Air Lift air spring. It is made with sturdy rubber construction and synthetic fabric reinforcement. This bellows has an inflated proper ride height of 6.0 to 8.0 inches and a maximum diameter of 8.0 inches. The replacement bellows features genuine high-strength, rust-proof Zytel endcaps and is reinforced with a steel girdle ring. This replacement bellows is covered by a limited lifetime warranty. Replacement Bellows for 57331 Air Lift Replacement Air Spring Bellows - 17-19 Nissan Titan 4WD