ICON Stage 3 Suspension System with Radius Arms for 2023-2026 Ford F-250/F-350 Super Duty 4WD Diesel 2.5" Lift

The ICON Stage 3 Suspension System delivers a 2.5-inch lift for 2023–2026 Ford F-250 and F-350 Super Duty 4WD trucks equipped with diesel engines, combining dual-rate coil springs, fabricated radius arms, an adjustable front track bar, and ICON 2.5 Aluminum Series piggyback reservoir shocks front and rear into a single 100% bolt-on package. SKU K65892R ships as five matched components tuned and tested together as a complete system.

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.

Radius Arms Built for Clearance and Caster Control

The fabricated, fully boxed radius arms included in this Stage 3 system allow on-vehicle caster adjustment without removing the arms, so alignment corrections after the lift can be made in the driveway rather than on a lift. The arms use a sealed pivot bushing that reduces road noise and resists wear over time. Their profile is optimized for tire clearance at full steering lock, allowing a 37-inch tall tire to clear the arm without contact, though running 37-inch tires will require fender trimming and additional modifications. The recommended tire size for a straightforward install is 35x12.50 inches.

Shocks Tuned for the Diesel Load

The dual-rate coil springs in this kit are rated specifically for diesel-engined Super Duty trucks, accounting for the added front weight of a diesel powerplant. The front and rear ICON 2.5 Aluminum Series piggyback reservoir shocks are vehicle-specific in their valving, increasing wheel travel and improving ride quality over stock without reducing towing capacity. The shocks are fully rebuildable and re-tunable, and ICON backs the springs with a lifetime guarantee against sag or breakage.

Bolt-On Installation, No Driveline Modifications

The Stage 3 system requires no drilling, cutting, or welding, and no drive shaft modifications. The adjustable front track bar corrects axle placement after the lift and reduces body roll compared to stock. After installation, Advanced Driver Assistance Systems (ADAS) must be recalibrated by a qualified shop. That recalibration is a required step, not optional. Trucks equipped with the Tremor package will see approximately 1.5 inches of front lift rather than the stated 2.5 inches due to the Tremor's higher factory ride height.

Features

• Dual-rate diesel coil springs: provide 2.5 inches of front lift over stock, rated for diesel-equipped trucks
• Fabricated radius arms: fully boxed design with sealed pivot bushing, on-vehicle caster adjustment, and optimized tire-clearance profile at steering lock
• Adjustable front track bar: corrects axle placement and improves handling after lift
• 2.5 Aluminum Series piggyback reservoir shocks: vehicle-specific tuning front and rear, fully rebuildable and re-tunable
• 100% bolt-on system: no drilling, cutting, welding, or drive shaft modifications required
• Lifetime spring guarantee: springs warranted against sag or breakage

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 a diesel engine, where the goal is a 2.5-inch lift with meaningfully improved on-road and off-road ride quality, increased wheel travel, and retained towing capacity.

This system does not fit F-350 Cab and Chassis models, 2WD Super Duty trucks, or gas-engine Super Duty trucks. The coil springs are rated for diesel weight only. It is not compatible with all factory OEM wheel and tire combinations; aftermarket wheels with lower offset are recommended. Trucks with the Tremor package will not achieve the full 2.5-inch lift. Vehicles equipped with OnBoard Scales require an additional sensor bracket (part 66203, sold separately). ADAS recalibration after installation is required and is not included.

Common Questions

Does this system fit gas-engine F-250 and F-350 trucks?

The ICON Stage 3 K65892R system does not fit gas-engine Super Duty trucks. The dual-rate coil springs in this kit are rated specifically for diesel-equipped F-250 and F-350 models, which carry additional front weight compared to gas variants. A separate ICON system is required for gas-engine applications.

Will my factory wheels and tires still fit after installing this system?

This Stage 3 system is not compatible with all factory OEM wheel and tire combinations. ICON Alloys in 17x8.5, 18x9, or 20x9 sizes with 6mm offset are the recommended aftermarket wheels, with lower offset and less backspace than typical OEM fitments. The recommended tire size is 35x12.50 inches; 37-inch tires may clear the radius arms but require fender trimming and additional modifications.

Is any cutting, welding, or driveline work required to install this system?

The ICON Stage 3 K65892R is a 100% bolt-on system. No drilling, cutting, welding, or drive shaft modifications are required for installation. After the lift is complete, Advanced Driver Assistance Systems must be recalibrated by a qualified shop. That recalibration is a required step for all installations.

What lift height should Tremor package owners expect?

Ford Super Duty trucks equipped with the Tremor package have a higher factory ride height than a standard 4WD Crew Cab diesel, so the front lift achieved with this system on a Tremor truck is approximately 1.5 inches over stock rather than the stated 2.5 inches. Rear lift depends on the rear shock and spring setup and is not affected by the Tremor note.

My truck has OnBoard Scales. Is anything extra required?

Ford Super Duty trucks equipped with the OnBoard Scales feature require an additional sensor bracket (ICON part number 66203) to relocate the scales sensor when the ICON radius arms are installed. That bracket is sold separately and is not included in the K65892R Stage 3 system.

Are the shocks rebuildable, and what does the spring warranty cover?

The ICON 2.5 Aluminum Series piggyback reservoir shocks included in this Stage 3 system are fully rebuildable and re-tunable. The dual-rate coil springs carry a lifetime guarantee against sagging or breaking. Both the shocks and springs are sold as part of the K65892R kit.

California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth anomalies, or other reproductive harm.