SKU #: CS-FFSP-17 MPN #: CS-FFSP-17

Carli Suspension Full Replacement Progressive Leaf Spring Pack for 4.5"-5.5" Systems 17-26 Ford SuperDuty 4x4

$1,948.00
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Description Overview
Carli's Full Progressive Spring Packs are specifically designed to work in conjunction with their 4.5-5.5" lift systems to deliver a level stance and a drastically improved ride. Available in Standard and Heavy Duty +1,000 lb configurations, these spring packs deliver smoother suspension cycling in all situations, including highway driving, off-road use, and towing. Designed to eliminate the factory rear block, these springs help reduce or eliminate axle wrap while providing an exceptional ride both on and off road. Eliminating axle wrap helps reduce wheel hop without the negative side effects of ladder bars that can limit rear suspension travel. The Heavy Duty +1,000 lb option is specifically designed for trucks carrying approximately 1,000 lbs of constant bed weight. IMPORTANT SHIPPING NOTICE: Because of the size and weight of this product, it must be shipped via truck freight on a pallet, and we must charge shipping. Please note we do not make a penny on the shipping, we are still losing money on it based upon the prices we are charging, but simply cannot ship this item free of charge.
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A full progressive leaf spring pack designed to eliminate the factory rear block and work with 4.5-5.5" lift systems for a level stance and improved ride.

Fits
2017-2026 Ford SuperDuty F-250 / F-350 4x4
Brand
Carli Suspension
Best for
Leveling and improving ride quality for lifted trucks used on highway, off road, and towing
Key features
  • Block eliminating, full progressive spring pack
  • Includes new u-bolts and rear bump stop drops
  • Reduces or eliminates axle wrap without limiting rear suspension travel
  • Supports 37" tire fitment
Important
Full Replacement Leaf Springs will reduce payload capacity; they are designed to work with Carli's Custom Valved Shocks and DO NOT work well with off-the-shelf valving; 37" tire fitment is based on recommended wheel spec of no more than 9" wide with 5" of backspacing; must be shipped via truck freight on a pallet with a shipping charge.

Summarized by AI from this product’s description and specs. Confirm fitment for your year, make and engine before ordering.

Carli's Full Progressive Spring Packs are specifically designed to work in conjunction with their 4.5-5.5" lift systems to deliver a level stance and a drastically improved ride. Available in Standard and Heavy Duty +1,000 lb configurations, these spring packs deliver smoother suspension cycling in all situations, including highway driving, off-road use, and towing.

Designed to eliminate the factory rear block, these springs help reduce or eliminate axle wrap while providing an exceptional ride both on and off road. Eliminating axle wrap helps reduce wheel hop without the negative side effects of ladder bars that can limit rear suspension travel. The Heavy Duty +1,000 lb option is specifically designed for trucks carrying approximately 1,000 lbs of constant bed weight.

IMPORTANT SHIPPING NOTICE:

  • Because of the size and weight of this product, it must be shipped via truck freight on a pallet, and we must charge shipping. Please note we do not make a penny on the shipping, we are still losing money on it based upon the prices we are charging, but simply cannot ship this item free of charge.
Manuals and Guides
Vehicle Fitment
2017-2026 Ford SuperDuty F-250 / F-350 4x4
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
FEATURES & BENEFITS:
  • Full progressive replacement leaf spring pack for smoother, more predictable suspension cycling
  • Block-eliminating design helps reduce axle wrap and wheel hop
  • Includes new U-bolts and rear bump stop drops
  • Provides a 1" rear-high stance on matching 4.5"-5.5" Carli suspension systems
  • Standard and Heavy Duty +1,000 lb configurations available to match different load requirements
  • Heavy Duty option is designed for trucks carrying approximately 1,000 lbs of constant bed weight
  • Designed to work with Carli custom-valved shocks
  • Supports 37" tire fitment with Carli's recommended wheel specifications

IMPORTANT NOTES:
  • Heavy Duty +1,000 lb springs are intended for trucks carrying approximately 1,000 lbs of constant bed weight and should not be used on an unloaded truck simply to accommodate occasional loads.
  • Full replacement leaf springs may reduce payload capacity compared to the factory spring pack.
  • Carli Full Replacement Leaf Springs are designed to work with Carli custom-valved shocks and are not recommended for use with off-the-shelf shock valving.
  • 37" tire fitment is based on recommended wheels no more than 9" wide with approximately 5"-5.5" of backspacing.
About Carli Suspension
CARLI SUSPENSION KITS, SYSTEMS, AND COMPONENTS

Yeah, we know Sage Carli can launch a full sized truck over nearly any obstacle. If you are into Baja racing, everyone knows by now that Carli Suspension is the name to go with. What you may not realize is that Carli has a suspension kit for your needs too. You probably don't care anything about having your expensive truck go air born, but you do want the best performance out of your suspension for your application. Carli Starter and Commuter 2.0 systems are designed to give you the best possible street manners compared to any other system on the market while providing ample room for the larger tires you want. Potholes disappear, you find yourself building speed on corners and washboard, and that's just when you are on the way to work. Now imagine heading out to feed the cows WITHOUT hitting your head on the headliner. Imagine coming back from your hunting trip WITHOUT needing a trip to the chiropractor. Take another look at Carli Suspension. It's not all about Baja. It's about YOUR truck and what you do with it. Stop by, we'll give you a ride and show you what you're missing. Just bring the checkbook and permission from the boss! One ride and you'll be hooked!

CARLI KITS

The entire engineering philosophy behind Carli aims to offer the real world Dodge Ram and Ford SuperDuty a suspension system that drastically increases the street drive of the vehicle while offering incredible off-road characteristics. So far, Sage Carli's suspension systems are the only option available where you don't have to compromise.

Carli products are designed to meet the expectations of both the daily street driver and the most extreme avid off road enthusiast. From the urban streets to the most remote places, Carli products will far exceed all your expectations. The easiest way to put this into perspective is that Carli truly builds suspension systems for the enthusiast....the person who truly LOVES their truck and wants to upgrade it with the most thought out, tasteful upgrades on the market. No, this type of individual isn't going to head to Napa to pickup a new track bar. They're going to research the best possible track bar on the market and go that route. Carli Suspension is truly a brand for enthusiasts, featuring products that are built by enthusiasts. Just watch any of Carli Suspension's videos and you'll understand why they have such a passion for their products.

Stock production trucks are built mainly to keep costs down. From a truck enthusiast's point of view these standards simply are not acceptable. From people looking to get a better ride with a more aggressive stance to people looking to get some serious off road performance, Carli understands the needs of these enthusiasts. This is epitomized by the ever growing list of satisfied customers. Carli Suspensions relentless pursuit of producing the best performing suspension systems is something that can be felt every time a customer drives their truck. Carli wouldnt have it any other way.

CARLI COMPONENTS

You know, its not always about a complete suspension. In fact, some of our best selling Carli products are things like a track bar, Carli ball joints, shocks, coil springs, and more. Maybe you've got a clunk in your front end that has been nailed down to being from a worn out track bar bushing and you did your research (mentioned above) and found out that the best track bar for your Ram or Ford is from Carli, so you buy that one. Or maybe you want a better ride, but only want to replace the coil springs for now. No problem. Sure, Carli is centered around their entire systems, but nearly all of their components can be used interchangeably on a stock height truck or one with an existing leveling or lift kit. We do our best to make note of any fitment requirements on each product page, but if you have any questions, please feel free to reach out and ask, we're happy to help.

Here at Diesel Power Products we only want to sell the best and lets face it, the stock Ram and Ford suspension needs help. Your stock suspension system is designed to be adequate and nothing more. Carli not only makes the ride of your truck better, it makes it safer. Whether you are towing a trailer on the interstate or doing a little off-road adventure, we will attest that you'll be more than satisfied by upgrading to Carli.