ICON Stage 4 Suspension System for 2023 Ford F-250/F-350 Super Duty 4WD Diesel 2.5" Lift

The ICON Stage 4 Suspension System delivers a 2.5-inch front lift for the 2023 Ford F-250 and F-350 Super Duty 4WD Diesel, pairing dual-rate coil springs with 2.5 Aluminum Series CDC Valve remote reservoir front shocks and piggyback reservoir rear shocks for tunable, rebuildable performance. The complete bolt-on kit includes an adjustable track bar, alignment cams, rear leaf spring expansion packs, U-bolts, a cast block kit, and a bump stop spacer kit covering the full front and rear of the truck.

Shipping: ICON parts ship direct from ICON Vehicle Dynamics, mostly by UPS Ground. Lead times vary by part and some items are built to order, so please allow extra time. We email tracking as soon as your order ships.

External Damping Adjustment Without Removing the Shocks

Both the front remote reservoir and rear piggyback reservoir shocks carry ICON's CDC (Compression Damping Control) Valve, giving the driver 10 distinct compression settings adjustable from outside the vehicle with no disassembly required. That range spans from a compliant soft setting suited to loaded highway miles to a firm setting for aggressive off-road use, so the truck can be dialed for the day's conditions rather than compromised between them. The shocks are also fully rebuildable and re-tunable, protecting the long-term investment.

Engineered for Diesel Weight and Towing Loads

The dual-rate coil springs in this kit are specifically rated for diesel-engine F-250 and F-350 trucks, accounting for the added front-end mass those powertrains carry. Remote reservoir and piggyback reservoir shocks extend consistent damping duration and reduce operating temperature during sustained heavy use, including the heat cycles that come from towing on grades or repeated washboard. Towing capacity is unchanged from stock, and the system produces less body roll than the factory setup.

Precise Geometry, Bolt-On Installation

The adjustable front track bar uses a large FK rod end for on-vehicle axle centering with minimal deflection. Application-specific alignment cams are included to restore proper caster after the lift. No drilling, cutting, or welding is required for installation. ICON's lifetime guarantee covers the springs against sagging or breaking, and no driveshaft modifications are needed.

Features

• 2.5-inch front lift: dual-rate coil springs rated for diesel engines; 1.5-inch lift on Tremor-package trucks
• CDC Valve shocks front and rear: 10-position external compression damping adjustment, soft to firm
• 2.5 Aluminum Series shocks: remote reservoir up front, piggyback reservoir in the rear; fully rebuildable
• Adjustable track bar: FK rod end for on-vehicle front axle centering
• Rear expansion packs: leaf spring expansion packs, 12-inch U-bolt kit, 1-inch cast block kit, and 2-inch bump stop spacer kit for reduced axle wrap and more compliant rear ride
• 100% bolt-on: no drilling, cutting, or welding; no driveshaft modifications required

Specifications

Who This Is For and Isn't

This system suits owners of a 2023 Ford F-250 or F-350 Super Duty 4WD Diesel with a single rear wheel configuration who want a tunable, complete front-and-rear lift with improved off-road capability and retained towing capacity. It is well matched to trucks used for towing, work-site driving, and mixed on- and off-road use where external damping adjustment is valuable.

This system does not fit 2024 or later Super Duty models, 2WD trucks, gasoline-engine trucks, F-350 or F-450 Cab and Chassis models, or dual rear wheel configurations. Trucks with the Tremor package will see 1.5 inches of front lift rather than 2.5 inches. Advanced Driver Assistance Systems (ADAS) require professional recalibration after installation. Trucks equipped with Dynamic Bending Headlamps or OnBoard Scales require an additional parts kit not included here (sold separately). A braided stainless brake line kit is optional and sold separately. The ICON track bar bump steer bracket is also recommended and sold separately.

Common Questions

Does this kit fit a 2024 Ford Super Duty?

No. The ICON Stage 4 system K62564L fits only the 2023 model year Ford F-250 and F-350 Super Duty 4WD Diesel. This system does not fit 2024 or later Super Duty models.

What lift height should a Tremor-package truck expect?

Trucks equipped with the Ford Tremor package will see approximately 1.5 inches of front lift over stock with this system, rather than the standard 2.5 inches. Rear lift figures follow the same F-250/F-350 split as non-Tremor trucks.

How does the CDC Valve adjustment work?

The CDC (Compression Damping Control) Valve on each shock allows 10 settings of compression damping to be selected from outside the vehicle without removing the shock. The range runs from soft, suited to highway and loaded towing, to firm for rougher terrain.

Is any cutting, drilling, or welding required?

No. The ICON Stage 4 system is a 100% bolt-on installation. No driveshaft modifications are required. A braided stainless brake line kit is available separately for installers who prefer not to re-bend the factory steel lines, but it is not required to complete the install.

Does installation require any recalibration or additional parts?

Yes. Advanced Driver Assistance Systems (ADAS) must be professionally recalibrated after this suspension system is installed. Trucks with Dynamic Bending Headlamps or OnBoard Scales require an additional ICON sensor mount kit (part 611081), sold separately. The ICON track bar bump steer bracket (part 64039) is also recommended and sold separately.

Will this system fit a dual rear wheel F-350?

No. The ICON Stage 4 system K62564L fits single rear wheel F-350 models only. Dual rear wheel configurations and F-350/F-450 Cab and Chassis models are not compatible with this kit.