2017-2026 Super Duty 4x4 XXHD +3500lbs Progressive Leaf Spring Kit - 1" Lift (CS-FFSP-LVL-17-XXHD)

Description

IMPORTANT - These will have a custom-order lead time AND require custom-tuned Pintop Shocks (different tuning than the XHD shocks) to support the massive rates and load capacity of these springs.

Specially designed for the massive flagship, off-road, or rescue truck, these springs are perfect for those who have custom flat-decks, large fixed campers, or utility boxes. These springs are massive and are only for those who have a 3,500 lbs constant load, and have been tested to handle trucks weighing over 11,000 lbs (over 6,000 lbs in the rear) with ease. If you're looking for heavy-duty, you've got it.

Part Number: CS-FFSP-LVL-17-XXHD

Features

• Compatible with 3.5-4" axle tubes
• Requires a 3,500-pound constant load
• Block-eliminating, full progressive spring pack produces a 1" lift
• Includes new U-bolts and rear bump stop drops
• Allows the use of 37" tires

Notes

• These leaf spring packs are NOT designed to run unloaded!
• As you're around the 6,500lb. rear axle weight (confirmed on certified scale), these will be the perfect means of suspending your adventure rig!

From Carli Suspension

Overland with a large cab-over camper or build an off-road rescue rig, these XXHD leaf springs support a 3,500lb. constant bed-load. Custom designed originally for the guys at Motorsports Safety Solutions (First Responders in Off-Road Racing, see build article HERE), these leaf springs bolster the SRW F350’s max bed-load capability into a working load capacity that’s huge on travel and fully progressive. The truck for which they were built scaled at 11,740lbs (5,400 front, 6,340 rear). The build article linked has in depth measurements and pictures to show how truly massive these springs are.

Developed for the massive, flagship, off-road race-rescue truck, we’ve sold these springs to many customers with custom flat-beds and large, fixed campers. So long as you’re around the 6,500lb. rear axle weight (confirmed on certified scale), these will be the perfect means of suspending your adventure rig!

As with the XHD springs, these will have a custom-order lead time AND require custom tuned Pintop Shocks (different tuning than the XHD shocks) to support the massive spring rates and load capacity of these springs.