Carli CS-FPAP-45-17 Add-A-Pack Rear Springs 4.5 inch Lift| 2017-2024 Ford F250/F350 Powerstroke 4WD

Features:

• 4.5 inch rear lift height
• Designed specifically for 2017–2024 F250/F350 4WD
• Progressive 6-leaf pack improves ride comfort
• Maintains original equipment load capacity
• Reduces harshness during daily freeway driving
• Replaces factory overload with thinner gauge leafs
• Built in partnership with Deaver Spring MFG
• Great for trucks used both on and off road
• Enhances suspension response and travel
• Ideal for pairing with Carli front lift systems
• Bolts into place using factory-style installation
• Provides a balanced stance with improved control

Smooth Out Your Ride Without Sacrificing Capability

If you're looking to lift the rear of your Super Duty and still enjoy a smooth, street-friendly ride, the Carli Add-A-Pack Rear Springs deliver exactly that. Built for 2017–2024 Ford F250 and F350 4WD trucks, this 4.5 inch lift solution transforms the way your truck handles bumps, dips, and daily driving without compromising payload capacity. These are not your average lift blocks, they’re a carefully engineered 6-leaf progressive pack designed by Carli and built by Deaver Spring MFG to reduce the harshness that often comes with traditional add-a-leaf kits. Whether you're cruising the freeway or rolling through job sites, these springs provide a noticeably more refined and balanced ride. The OE load capacity is retained, so you can still tow and haul confidently while enjoying a suspension that feels far more composed. If you're after a rear lift that works just as well on the road as it does off, this kit is an excellent choice. It’s a performance-focused upgrade for the truck owner who demands comfort and capability in one package.

Progressive Rate Engineering That Balances Load And Comfort

The Carli CS-FPAP-45-17 Add-A-Pack Rear Springs are engineered to provide 4.5 inches of rear lift for 2017–2024 Ford Super Duty F250 and F350 4WD trucks, while maintaining factory load-carrying capacity. Developed in collaboration with Deaver Spring MFG, this system replaces the factory lower overload spring with six thinner-gauge progressive-rate leafs that deliver improved ride quality without sacrificing durability or support. The progressive design allows the suspension to remain soft and compliant under light loads but firm up as weight is added, offering better overall control and comfort. It’s an ideal upgrade for those running a Carli front lift who want rear suspension performance to match. The add-a-pack integrates seamlessly into the OEM spring pack and installs using the factory-style mounting hardware. Whether towing, hauling, or simply daily driving, this rear spring setup enhances suspension articulation and smooths out rough pavement or trail chatter. It’s a precision solution that balances factory function with custom ride quality improvements.

Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 Ford F250/F350 Powerstroke 4WD

Notes:

• Fits 2017–2024 Ford F250 and F350 Super Duty 4WD trucks
• Provides 4.5 inches of rear lift to level stance
• Designed in partnership with Deaver Spring MFG
• Replaces factory overload with six thinner leafs
• Progressive-rate design improves ride comfort
• OEM load capacity is fully maintained
• Ideal for both single rear wheel and dual rear wheel setups
• Perfect for everyday freeway driving and light off-road use
• Best when paired with a Carli front suspension system
• Improves suspension articulation and rear-end response