Carli Add-A-Pack Rear Leaf Springs - 2017-23 Ford F250/F350 4×4 - 1in Lift
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
Carli Suspension
Carli 17-26 Ford F250/350 4X4 Progressive Add-A-Pack 1in Lift
The Carli Progressive Add-A-Pack is a premium rear suspension upgrade designed to improve ride quality and rear spring performance on Super Duty trucks while maintaining factory load capacity. Built in the USA by Deaver Spring Manufacturing, this proprietary 6-leaf progressive pack replaces the harsh factory overload leaf with a smoother, more predictable spring rate.
By eliminating the abrupt engagement of the factory overload spring, this system dramatically improves ride comfort, traction, and control over medium to large bumps. The progressive design ensures smoother engagement and disengagement of the spring, making it an ideal pairing with Carli leveling systems while maintaining the truck’s intended load handling capability.
Key Features:
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Built in the USA by Deaver Leaf Spring
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Proprietary 6-leaf progressive spring design
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Replaces factory overload leaf for improved ride quality
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Maintains OEM load capacity
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Provides approximately 1/2"–1" rear lift
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Eliminates harsh rebound from factory overload spring
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Includes bump stop drops, U-bolts, and installation hardware
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Designed to pair with Carli leveling systems
Notes:
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Eliminates the factory overload leaf and replaces it with thinner progressive leaves
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Improves ride quality and traction by smoothing spring engagement
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Rear may sit lower under heavy load but will ride significantly better
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Not recommended for F-350 models due to stiffer factory main leaf pack
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For best ride quality, full replacement progressive leaf packs are recommended, especially for F-350
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Airbag systems are recommended if maintaining load capacity is critical
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Long travel airbags recommended for 4.5"/5.5" systems
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Disconnect-style airbags recommended for 2.5"/3.5" systems to allow full suspension travel
Vehicle Fitment:
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2017–2026 Ford F-250 Super Duty
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2017–2026 Ford F-350 Super Duty
SKU: CS-FPAP-LVL-17
