Ford Super Duty HD 5.5″ Full Progressive Leaf Springs

Motortopia Staff . June 10, 2025 . Press Release

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With the growing number of leaf spring SKUs in our catalog, it’s easy to feel overwhelmed. But each part number exists for a reason—driven directly by user feedback and real-world demands. While many aftermarket companies take the “X inches of lift” approach with generic ride targets, Carli has always engineered around use-case-specific performance.

We don’t believe in one-size-fits-all solutions. Instead, our development process focuses on how the truck is being used—unloaded daily driving, heavy hauling, overlanding, or off-road performance. That’s why our catalog is filled with finely tuned options, rather than mass-produced compromises.

Introducing the 5.5″ HD Leaf Springs for 2017+ Super Duty

This newest addition is a heavy-duty full progressive pack designed specifically for trucks running 5.5″ of lift. It’s engineered to handle additional payload without sacrificing ride comfort, balancing higher capacity with controlled spring rate progression.