Carli Suspension Ford 4.5" Dominator 3.0 System | 2017–2026 F-250/F-350 Diesel 4WD

Is This for You?

• You're on a 2017–2026 Super Duty Diesel and you want the largest bolt-in King shock available for this platform — King 3.0" Remote Reservoir fronts, 10.0" of front travel, and 13.0" of rear travel without cutting or boring the factory coil buckets.
• You tow regularly, run 37" tires, and drive at speed on rough terrain — and you need damping volume that resists fade under sustained load, not a shock that's tuned for a gas-engine half-ton.
• You have a professional shop lined up for the rear weld-on mounts — the front is bolt-in via custom offset mounts, but the rear shock mounts (CS-FRSM-17) require frame welding to handle the forces generated at this travel level.

The Result

• 4.5" front lift / 2.5"–3.5" rear lift — 10.0" front wheel travel / 13.0" rear wheel travel.
• King 3.0" Remote Reservoir fronts bolt in via custom offset upper stem-top and lower mounts — no coil bucket boring, no front fabrication.
• Carli Signature-tuned valving throughout — spring rates and damping calibrated for Powerstroke diesel front axle weight, not a gas-engine tune.

The King 3.0" Remote Reservoir shock runs a 3.0" body diameter with a remote reservoir canister — significantly more oil volume than a 2.0" or 2.5" shock body. That oil volume is the primary variable controlling thermal fade: more volume means a higher thermal ceiling before damping consistency degrades under repeated high-speed impacts or sustained towing loads. On the 2017–2026 Super Duty platform, Carli engineered custom offset upper stem-top and lower mounts that allow the King 3.0" body to clear the factory coil bucket geometry without cutting or boring — a meaningful advantage over older platforms where bucket boring is mandatory. The progressive rate front coil springs (CS-FMRC-17) are not a generic lift spring — they are rate-matched to the King 3.0" valving curve and calibrated for Powerstroke front axle weight. Running these springs against a gas-engine weight distribution will produce an oversprung front end. The rear King 3.0" Piggyback shocks require weld-on frame mounts (CS-FRSM-17) because the 3.0" body diameter and the forces generated at 13.0" of rear travel exceed what a bolt-on bracket can reliably handle at speed. Rear lift height is determined by leaf spring selection — this base system does not include rear leaf springs; an Add-A-Pack or Full Progressive Leaf Pack must be selected separately. The Torsion Sway Bar (CS-FTSB-45-17, sold separately) is not optional if you intend to use the full travel range — standard sway bar drops will bind before the suspension reaches full droop, limiting the travel the King 3.0" shocks are designed to provide.

Audit Table

Kit Contents

• 4.5" Progressive Rate Front Coil Springs (CS-FMRC-17)
• King 3.0" Remote Reservoir Front & Piggyback Rear Shocks (CS-FDOM30SPKG-45-17)
• Adjustable Track Bar (CS-FPRB-17)
• Radius Arm Drop Brackets & Crossmember (CS-FRAD-17)
• Front Bump Stop Drop Brackets (CS-FBDF-17-4.5)
• Front & Rear Braided Stainless Brake Lines (CS-FBL-17-F / CS-FBL-17-R)
• Caster Correction Shims (CS-FCASTERSHIM-4.5)
• Weld-On Rear Shock Mounts (CS-FRSM-17)

Verified Fitment

✔ 2017–2026 Ford F-250 Super Duty 4WD — Powerstroke Diesel
✔ 2017–2026 Ford F-350 Super Duty SRW 4WD — Powerstroke Diesel

✘ Does NOT fit: Ford F-250/F-350 Gas engines — spring rates and shock valving calibrated for Powerstroke diesel front axle weight
✘ Does NOT fit: Ford F-350 DRW (Dually) — front suspension geometry incompatible
✘ Does NOT fit: 2016 and earlier Ford F-250/F-350 — different platform architecture; see CS-F45-UC30-11 for 2011–2016
✘ Does NOT fit: 2WD Super Duty models
✘ Does NOT fit: Ford F-150 — incompatible platform
✘ Does NOT fit: Ram or GM platforms

Installation Notes

• Front Installation: Bolt-in. Custom offset upper stem-top and lower mounts allow King 3.0" shocks to install without cutting or boring factory coil buckets. No front fabrication required.
• Rear Shock Mounts (CS-FRSM-17): Weld-on. Must be offset from the frame to clear the 3.0" shock body and provide structural integrity for high-speed use. Professional welding required.
• Rear Leaf Springs: Not included in this base system. An Add-A-Pack or Full Progressive Leaf Pack must be selected separately. Rear lift height is determined by leaf selection.
• Torsion Sway Bar (CS-FTSB-45-17): Sold separately. Standard sway bar drops will bind before full droop and limit available travel. Carli strongly recommends this upgrade.
• Full front-end alignment mandatory post-installation. Caster correction shims (included) address primary deviation at 4.5" lift — verify final alignment specs with installer.
• Torque all fasteners to Carli specification. Re-torque all suspension fasteners at 500-mile break-in interval.

⚠️ LTL Freight Notice: This item ships via freight carrier on a double pallet due to size and weight (~410 lbs). Residential delivery is included. Freight carrier will contact you to schedule delivery.

Engineering Question: Have you selected your rear leaf spring option (Add-A-Pack vs. Full Progressive Pack) and confirmed Torsion Sway Bar (CS-FTSB-45-17) sourcing? Rear lift height is determined entirely by leaf selection, and the sway bar directly limits available travel at this shock size. Confirm your full build spec — including rear spring choice and sway bar — before ordering.