1999-2004 Ford F250/350 2-Stage Front Air Suspension

The Kelderman 2-stage air suspension for straight-axle Ford 4x4 trucks will soften up the harsh ride associated with leaf springs to make it 12” in length. Next, an air bag is placed between the axle and the side of the frame to carry the weight the bottom leaf once carried. This allows the air bag to shoulder the weight and dramatically improve the ride. The 12” bottom leaf spring is left in place to counteract axle twist under extreme braking.


  • System includes shocks.
  • Typical installation time between 4-5 hours.
  • Bag pressure will be between 25-30 psi.