Suspension and Components› Suspension Kits
Carli Suspension
Add-A-Pack Rear Leaf Springs 2017-23 Ford F250/F350 44 3 Lift Carli Suspension
SKU: C07U CS-FPAP-45-17
Moderate — 2–4 hours
Description
Part #: CS-Fpap-45-17
Carli's six-leaf progressive Add-A-Pack rear springs replace the lower overload leaf with six thinner leafs. It maintains factory load capacity while improving ride quality by effectively mitigating the impact of medium to large bumps.Features and Benefits:Carli progressive-rate Add-A-Pack rear springs are specifically designed to address the harsh rebound of the factory overload spring they replace. When used in conjunction with a Carli Suspension System, they effectively mitigate the impact of medium to large bumps. By replacing the lower overload springs, which are typically one inch thick and do Not follow the contour of the rest of the pack, with a mini progressive six-leaf pack, the overall capacity of the truck remains unchanged as determined by the factory springs. However, the progression of the rear spring rate becomes significantly more predictable. This modification results in a smoother engagement and disengagement of the spring, thereby improving both ride quality and traction.Fits 2017-23 Ford F250/F350 4x4Progressive design addresses the harsh rebound of the factory overload springIncludes 2-inch block, bump stop drops, U-bolts, and hardwareThree-inch lift provides slightly rear-high stance with 4.5-inch and 5.5-inch liftsLoad capacity is maintained, ride quality is improvedDetails:Drive: 4WDLift Height: 3.0 inchLocation: RearWarranty: Limited Lifetime WarrantyFitment:2017-2026 Ford F-250 Super Duty (Front) (Drive: 4WD)2017-2026 Ford F-350 Super Duty (Front) (Drive: 4WD)
Carli's six-leaf progressive Add-A-Pack rear springs replace the lower overload leaf with six thinner leafs. It maintains factory load capacity while improving ride quality by effectively mitigating the impact of medium to large bumps.
MIA's Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Carli Suspension |
| Part Number | C07U CS-FPAP-45-17 |
Videos
Carli Suspension Full Pack or Add a Pack?
Ultimate Carli Suspension Guide: Which system is right for YOUR Ford Super Duty?
2019 Ford F-250 Carli Suspension build
How to install CARLI 4.5 Pintop Lift & Suspension Kit on new Ford F250 - Top it off with FUEL Wheels
Carli Suspension Review 2022 Ford F250
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy