Manufactured by Air lift | 89352 | 2020-22 F250/F350 SRW (does not fit dually) 4wd AirLift LoadLifter 5000 Ultimate Plus with stainless steel air lines, Does not fit commercial chassis or Dual Rear Wheel models. Does fit Tremor., 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