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New HD Progressive Leaf Springs for 5.5″ Super Duties

Motortopia Staff . September 29, 2025 . Press Release
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Introducing HD Full Progressive Leaf Springs tailored for 2017+ Super Duty trucks with a 5.5″ lift. These springs are engineered for trucks with a constant bed load of approximately 1,000 lbs—think drawer systems, auxiliary tanks, tools, or off-road gear.

Why this matters:

  • Superior ride quality thanks to multiple thin leaves blending spring-rate—no more abrupt transitions found in factory 2- or 3-stage packs
  • Better chassis balance under load—the HD springs match the feel of the standard progressive pack when loaded with 1,000 additional pounds 
  • Ready for towing: For heavier or variable loads, pair the HD springs with airbags like Carli’s Long Travel Airbags for dynamic support

The first batch is expected to ship in Mid to Late October. If you’ve been asking for an HD option, it’s almost here—stay tuned!

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