SKU: 91905896930

2011-2016 Super Duty 4x4 Progressive Add-A-Pack Kit (CS-FPAP-11)

Sale price$449.10 Regular price$499.00
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

2011-2016 Super Duty 4x4 Progressive Add-A-Pack Kit (CS-FPAP-11)Description Designed and built in conjunction with Deaver Spring MFG, these Carli Add A Pack Leaf Springs eliminate the use of your lower overload leaf, giving you thinner gauge leaves that improve mobility of the springs, traction, predictability, and ride quality off road and when you're hauling without compromising load capacity. Part Number: CS FPAP 11 Features Compatible with 3. 5" axle tube Progressive design addresses the harsh rebound of the

Description

Designed and built in conjunction with Deaver Spring MFG, these Carli Add-A-Pack Leaf Springs eliminate the use of your lower overload leaf, giving you thinner gauge leaves that improve mobility of the springs, traction, predictability, and ride quality off-road and when you're hauling without compromising load capacity.

Part Number: CS-FPAP-11

Features
  • Compatible with 3.5" axle tube
  • Progressive design addresses the harsh rebound of the factory overload spring
  • Includes U-bolts and hardware
  • Provides 2" of lift
  • Load capacity is maintained, and ride quality is improved
Notes
  • When it comes to the F350, the main spring pack in the rear is already quite stiff and does not compress much unless under load. As a result, installing the Add-A-Pack on an F350 may actually make the rear suspension stiffer, potentially even stiffer than the stock setup. For this reason, the Progressive Add-A-Pack is not recommended for an F350. To achieve optimal ride quality, we highly recommend installing Carli Full Replacement Leaf Spring Packs
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 91905896930

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4.6 ★★★★★
Based on 13 reviews
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J
Verified Purchase
James P McMahon
New York, US
★★★★★ 5
Great item!!
Color: Original Grey
These socks actually work!!! No more split skin on my heels!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
P
Verified Purchase
Paula S
Cuba, US
★★★★★ 3
Quality and Price
Color: Original Grey
For me a little tight on my ankles
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026
C
Verified Purchase
Chan.C
West Palm Beach, US
★★★★★ 5
Soft!
Color: Peach Fuzz
These socks for dry heels are wonderful. I purchased a balm for my feet and these help it soak in over night. They have a gel liner in the heel which is soft. The first few nights I could. Feel the socks just because I wasn't used to it but after a few wears I can't tell I have them on. Love them and seem to be helping my heels.
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Reviewed in the United States on May 23, 2026
G
Verified Purchase
geoffrey desmond
Massapequa, US
★★★★★ 5
Soft heels, here I come!
Color: Blue Haven
⭐️⭐️⭐️⭐️⭐️ I bought these for my 16-year-old daughter, and she loves them. They’re super soft and cozy, and they’ve really helped with dry heels. The moisturizing lining works great, and her feet feel noticeably smoother after wearing them. She even wears them around the house because they’re comfortable, not bulky or slippery. Great quality and a fun little self-care item — definitely a win! I even bought myself and my mom a pair!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
E
Verified Purchase
Emily Ross
San Leandro, US
★★★★★ 5
Works great!
Color: Lavender Luxury
Kind of surprising but these actially work and are comfortable. I noticed a difference in my calloused heels after the first use.
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Reviewed in the United States on May 21, 2026

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