Hadley / Link Suspensions

Hadley Height Control Systems are the choice of vehicle manufacturers and fleets because of their proven performance. Whether it’s our 450, 500 or 600 series of classic valves, or our next generation height control valves you will enjoy significant benefits.

Hadley height control valves are engineered to be the most reliable valves on the road. Counterfeit valves are not built to the same standards, do not meet the same specifications, and do not perform as well or last as long as a genuine Hadley valve.

Genuine Hadley Means Superior Performance

  • Superior lubricants with proven and consistent lubrication to protect the valve
  • Proven O-ring seal integrity throughout the life of the valve
  • Counterfeit valves require frequent replacement due to excessive wear and tear
  • Hadley leveling valves are designed with 37 years of leveling valve technology
  • Chosen by OEMs more often than any other valve brand
  • Engineered to outlast all other leveling valves
  • Made in the USA