We asked ourselves, what would the ultimate air suspension be like? How would it combine an easy-to-use, reliable, and feature-rich system with powerful technology and beautiful design? Air Lift Performance 3H is the result of three years of development and testing. It is the most advanced product we have ever created.Air Lift Performance 3H combines pressure-based control with ride-height sensing technology. While both types of air management have been utilized before, this is the first product to harness the benefits of both sytems, instantly improving suspension control, performance, and vehicle ride flexibility.