Carli Xxhd Leaf Spring Kit - 2017-23 Ford F250/F350 - +3500 Lbs - 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 XXHD Leaf Spring Kit - 2017–2023 Ford F250/F350 - +3500 lbs - 1" Lift
The Carli XXHD Full Replacement Leaf Spring Kit is engineered specifically for extreme constant-load applications, supporting trucks with a sustained 3,500 lb bed load. Designed primarily for cab-over campers and heavy-duty overland or rescue builds, this system delivers exceptional stability, control, and fully progressive suspension performance under heavy weight. These springs are not intended for unloaded use and require the full constant load to achieve proper ride height and functionality.
Originally developed for a professional off-road race rescue vehicle, this XXHD spring pack transforms your truck’s rear suspension into a high-capacity, travel-friendly system capable of handling serious weight with confidence. Due to the increased spring rate and elevated center of gravity, Carli strongly recommends pairing this kit with 2.5" remote reservoir shocks and custom tuning for optimal ride quality and control.
Key Features:
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Designed for constant 3,500 lb bed load applications
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Ideal for cab-over campers, flatbeds, and overland builds
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Full progressive, block-eliminating leaf spring pack
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Provides approximately 1" of lift at rated load
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Enhances rear suspension travel and load stability
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Includes new U-bolts and rear bump stop drop spacers
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Supports up to 37" tire fitment
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Engineered for high center of gravity applications
Fitment:
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2017–2023 Ford F-250 4x4 (Diesel)
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2017–2023 Ford F-350 4x4 (Diesel)
Notes:
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Not designed for unloaded driving conditions
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Requires approximately 3,500 lbs constant load for proper ride height and performance
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Recommended rear axle weight: ~6,500 lbs (verified on certified scale)
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Compatible with 3.5"–4.0" axle tube diameters
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Recommended upgrade: Carli 2.5" remote reservoir shocks with custom tuning
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Originally developed for heavy-duty off-road rescue and expedition builds
SKU: CS-FFSP-LVL-17-XXHD
