These Carli CS-FFSP-17 Full Progressive Rear 3 inch Leaf Springs for the F250 / F350 are manufactured by Deaver Spring Mfg, in exclusive partnership with Carli Suspension. This innovative design offers a significantly more predictable and comfortable ride, with only a minor decrease in standard 3/4-ton load capacity. Unlike factory leaf spring packs, which typically feature 2-4 heavy main springs and an unyielding lower overload, our solution consists of a 9-Leaf main pack and a 3-Leaf overload, providing a more progressive spring rate. This results in a smoother unloaded ride, increased suspension travel, and impressive load-bearing capabilities as the rear end compresses, engaging all the springs.
Features & Benefits:
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Important Notes
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Vehicle Fitment
| Make | Ford |
|---|---|
| Model | F250, F350 |
| Year Fitment | 2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017 |
| 2WD/4WD | 4WD |
Tech Specs
| Manufacturer | Carli Suspension |
|---|---|
| Manufacturer Part Number | CS-FFSP-17 |
| Item Number | car_cs-ffsp-17 |
| MPN(UPC) | 883584135371 |
| Product Line | Leaf Spring Set |
| Lift Height | 3 inch |
| Front/Rear | Rear |






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