
Ford F-250/F-350 Super Duty · 2017–2026
Full Progressive Leaf Spring Kit - 1" Lift
Carli Suspension · CS-FFSP-LVL-17
Built to order. Ships in 1 to 8 weeks — we confirm your build date within 1 business day.
Flat-rate freight is added at checkout — complete lift kits $300. Orders over $8,500 ship free.
Variety of Payment Options

Carli Suspension CS-FFSP-LVL-17 Ford F-250/F-350 Super Duty 2017–2026 Full Progressive Leaf Spring Kit - 1" Lift
Product Overview
Description
Full Progressive Leaf Spring Kit - 1" Lift
Manufacturer description: 17-26 FORD F250/350 4X4 FULL PROGRESSIVE LEAF SPRING KIT - 1" LIFT
From Carli Suspension
The coating is applied to each leaf before assembly to ensure complete coverage. FACTORY LEAF SPRINGS Knowing whether to swap leaf springs starts by understanding what’s on the truck and the shortcomings of the design. The factory springs do one thing well – haul. They’re designed and built to handle the max capacity of the truck every day of the truck’s life and, when loaded with max capacity, they ride decent. Thing is, most of these trucks sell to people that will use the HD truck for its intended purpose, but far less frequently than the design intends.
Leaf springs are archaic in design – they either haul well or ride well. You can land anywhere in this spectrum you’d like but there will be sacrifices at the opposite end as you shift throughout. The factory springs slide the scale all the way to the “haul well” end of the spectrum. Let’s dig into their design…
- Provides a slightly rear high stance to Carli Leveling Suspension Systems
- Reduced Overall Spring Rate to “light 3/4-ton” for a Better Ride
- Increased Progression (Spring Rate)
- Progressive Overload (Factory overload is a hard-stop)
- Dramatically Increased Suspension Travel
- Minimized Friction Throughout the Pack
- Optimized Center Pin Location to Ensure Maximum Tire Fitment
- Includes Serviceable Bushings, New U-Bolts and Rear Bump Stop Drops
Fitment
Fits 2017–2026 Ford F-250/F-350 Super Duty. Confirm your exact cab, bed and fuel configuration before ordering — Carli parts are built to a specific chassis.
Specifications
| Manufacturer | Carli Suspension |
| Part number | CS-FFSP-LVL-17 |
| Fitment | 2017–2026 Ford F-250/F-350 Super Duty |
| Lift height | 1" |
| Shipping weight | 317 lb |
Lead time is confirmed at the time of order. Professional installation and an alignment afterward are strongly recommended.

