ICON Stage 4 2.5-Inch Lift Suspension System with Radius Arms for 2023-2026 Ford F-250/F-350 Super Duty 4WD Gas

The ICON Vehicle Dynamics Stage 4 Suspension System delivers a 2.5-inch lift (measured on a 4WD Crew Cab gas model) for 2023–2026 Ford F-250 and F-350 Super Duty 4WD trucks equipped with gasoline engines, pairing dual-rate coil springs, fabricated radius arms, an adjustable front track bar, and CDC Valve-equipped 2.5 Aluminum Series shocks front and rear into a fully bolt-on package that requires no drilling, cutting, or welding.

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.

Tunable Damping, Front and Rear

Both the front remote reservoir and rear piggyback reservoir shocks carry ICON's CDC Valve, giving 10 externally accessible compression damping settings from soft to hard. That range means the same truck can run a compliant highway setting on a long tow and a firmer off-road setting on a trail without pulling a shock off the vehicle or reaching for a laptop. Because the shocks are fully rebuildable and re-tunable, the damping character can be updated as driving needs change rather than replaced outright.

Radius Arms Built for Clearance and Caster

The fabricated, fully boxed radius arms include a sealed pivot bushing that reduces road noise transmission and is designed for long service life. The arm profile is optimized so a 37-inch tall tire clears the radius arm at full steering lock without contact. On-vehicle caster adjustment is built into the arm, so alignment can be dialed in without removing the system. The adjustable front track bar keeps the axle centered and improves handling geometry after the lift is installed.

No Towing Capacity Change, No Driveshaft Work

The Stage 4 system increases wheel travel and improves ride quality over stock while maintaining the truck's towing capacity. No driveshaft modifications are required. The dual-rate coil springs carry a lifetime guarantee against sagging or breaking and are rated specifically for gasoline-engine load characteristics.

Features

• CDC Valve shocks, front and rear: 10 compression damping settings adjustable on the vehicle
• 2.5 Aluminum Series shocks: remote reservoir up front, piggyback reservoir in the rear, fully rebuildable
• Fabricated radius arms: fully boxed, sealed pivot bushing, on-vehicle caster adjustment, 37-inch tire clearance at steering lock
• Dual-rate coil springs: rated for gasoline engines, lifetime guarantee against sag or breakage
• Adjustable front track bar: corrects axle placement and handling geometry post-lift
• 100% bolt-on installation: no drilling, cutting, or welding required

Specifications

Who This Is For and Isn't

This system suits 2023–2026 Ford F-250 and F-350 Super Duty trucks in 4WD configuration with gasoline engines, including those used for towing, job-site work, and off-road driving, where the owner wants externally tunable damping and improved tire clearance without modifying the driveshaft or losing towing capacity.

This system does not fit F-350 Cab and Chassis models, any 2WD Super Duty, or diesel-powered Super Duty trucks. Trucks equipped with the Tremor package will see 1.5 inches of front lift rather than 2.5 inches. Trucks with Ford's OnBoard Scales system require an additional sensor bracket (ICON part 66203, sold separately). Advanced Driver Assistance Systems (ADAS) require recalibration after installation. The bump steer geometry correction bracket (ICON part 64039) is separately recommended. The brake line kit (ICON part 61111) is optional and not required for a complete install.

Common Questions

Does this system fit diesel-powered F-250 and F-350 trucks?

No. The ICON Stage 4 system for 2023–2026 Ford F-250/F-350 Super Duty uses dual-rate coil springs rated specifically for gasoline engines. A separate ICON system is required for diesel-powered Super Duty trucks.

Will my factory wheels fit after installing this system?

Yes. The Stage 4 system is confirmed compatible with OEM wheels and tires. For aftermarket fitments, ICON recommends 17×8.5-inch wheels with 5-inch backspace and 6 mm offset, 18×9-inch wheels with 5.25-inch backspace and 6 mm offset, or 20×9-inch wheels with 5.25-inch backspace and 6 mm offset.

How does the CDC Valve damping adjustment work?

Each shock on this Stage 4 system carries a CDC Valve with 10 compression damping settings, adjustable externally on the vehicle without removing the shock. Both the front remote reservoir shocks and the rear piggyback reservoir shocks include the CDC Valve.

Does installation require cutting, drilling, or welding?

No. The ICON Stage 4 system is a 100% bolt-on installation. No drilling, cutting, or welding is required. Note that Advanced Driver Assistance Systems (ADAS) require professional recalibration after the lift is installed, and trucks with Ford's OnBoard Scales system need an additional sensor bracket (ICON part 66203, sold separately).

What is the largest tire this system will clear?

The fabricated radius arms on this Stage 4 system are profiled to clear a 37-inch tall tire at full steering lock without contact. ICON's recommended tire size is 35×12.50; 37×12.50 tires may fit but will require fender trimming and additional modifications.