What is the main benefit of a progressive leaf spring design?

A progressive leaf spring design uses thinner, more flexible leaves that engage gradually. This helps to absorb impacts from medium to large bumps more smoothly, reducing harshness and improving ride quality compared to a standard leaf spring setup.

Does this kit include everything needed for installation?

Yes, the Carli Progressive Add-A-Pack includes the six-leaf progressive spring pack, U-bolts, and all necessary hardware to complete the installation.

Will this kit affect my truck's towing or hauling capacity?

No, this kit is designed to maintain your truck's factory load capacity. The progressive spring design improves ride quality without compromising the ability to haul or tow.

Specifications

Brand: Carli
Part #: CS-FPAP-05
UPC: 883584148852

Carli

Carli 05-07 Ford F250/350 4x4 Progressive Add-A-Pack

Name: Carli 05-07 Ford F250/350 4x4 Progressive Add-A-Pack
Brand: Carli
SKU: carli-carli-05-07-ford-f250-350-4x4-progressive-add-a-pack-t14-818971
Price: 733.31 USD
Availability: BackOrder

$733.31

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2005-2007 Ford F-250/F-350 Super Duty. Carli's progressive leaf spring kit improves ride quality while maintaining factory load capacity.

Key Features

Fits 2005-2007 Ford F-250 Super Duty and 2005-2007 Ford F-350 Super Duty 4x4.
Progressive leaf spring design helps mitigate the harsh rebound of the factory overload spring.
Maintains factory load capacity for hauling and towing needs.
Improves ride quality by absorbing medium to large bumps more effectively.
Includes necessary U-bolts and hardware for installation.
Provides approximately 2.0 inches of rear lift.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

Carli Suspension is known for developing well-built suspension components for trucks, and their Progressive Add-A-Pack for the 2005-2007 Ford F-250 and F-350 Super Duty 4x4 is a prime example. If you're looking to smooth out the ride on your Super Duty, especially over medium to large bumps, this kit is designed to help. It replaces the factory overload spring with a six-leaf progressive pack, which works to absorb impacts more effectively than the stock setup.

The key to this kit is its progressive design. Instead of the harsh, jarring rebound you can get from the factory overload spring, this Carli pack uses thinner leaves that flex more gradually. This means you get a noticeably improved ride quality without sacrificing the load capacity your truck needs for hauling or towing. The kit also includes the necessary U-bolts and hardware, making installation more straightforward. When installed, this kit will also provide about 2.0 inches of lift to the rear of your truck.