Manufactured by Air lift | 89396 | 2011-16 Superduty 4x4 AirLift LoadLifter 5000 Ultimate Plus with stainless steel air lines, 2011-16 Superduty 4x4, also works on trucks with 5th wheel hitch. All the benefits of the LoadLifter 5000 series with the addition of an internal bumpstop in the bags and stainless steel air lines., LoadLifter5000 Air Spring Kit by Air Lifts are specifically engineered for hauling or towing heavy loads. LoadLifter 5000 air springs are designed to fit popular vehicles and pickup trucks, motor homes, commercial trucks and other severe uses. Product information updated on 2023-08-21