4.5" Lift Stage 4 Suspension System Kit w/ Radius Arms (Gas)

Features:

• Fits 2023–2025 F-250/F-350 gas 4WD
• 4.5" front lift with dual rate coils
• 2.5 remote reservoir shocks front and rear
• Radius arms improve strength and caster alignment
• Improved tire clearance at full steering lock
• 50% more front wheel travel than stock
• Adjustable track bar centers the front axle
• Dual stabilizers reduce feedback from large tires
• Rear lift uses heavy-duty 5" fabricated blocks
• Shocks are fully rebuildable and re-tunable
• Corrosion-resistant anodized shock bodies included
• Backed by ICON's lifetime component warranty

Take Your Super Duty To The Next Level

If you're looking to lift your truck without sacrificing drivability, the ICON Stage 4 Suspension System with Radius Arms is a serious upgrade for your 2023–2025 Super Duty. This setup isn’t just about gaining height, it’s built to enhance ride quality, boost off-road performance, and give your truck the confidence to handle real-world work and weekend adventures. The 4.5 inches of front lift and 5-inch rear blocks give you the clearance to run larger tires, while maintaining a smooth, controlled feel on pavement and dirt alike. With remote reservoir 2.5 shocks at all four corners, your truck stays cool and composed under towing stress or during rough trail use. The included dual steering stabilizers bring a noticeable improvement in steering feel, especially when oversized tires are in play. Add in the strength and adjustability of ICON’s fabricated radius arms, and you've got a system that's as ready for job site duty as it is for the open desert. This is the kind of upgrade that doesn’t just look good, it makes your truck drive like it should’ve from the factory.

Tuned Suspension Geometry For Real World Performance

The ICON K65913R Stage 4 Suspension System combines vehicle-specific tuning with serious hardware upgrades to deliver balanced performance across on-road and off-road environments. It starts with dual rate coil springs optimized for gas-powered Super Duty trucks, giving you a plush feel during daily driving and firmer control when loaded or off-pavement. ICON’s 2.5 Aluminum Series shocks with remote reservoirs provide increased oil capacity and better heat dissipation, helping to maintain consistent damping under extended use. Fabricated radius arms replace the factory units, offering higher strength, built-in caster adjustment, and better ground clearance by eliminating the need for drop brackets. An adjustable track bar helps fine-tune axle positioning and reduces bump steer for better steering feel. Out back, heavy-duty 5-inch fabricated blocks and extended U-bolts lift the rear while keeping it stable under heavy load or trail articulation. Dual 2.0 steering stabilizers are also included to help dampen steering input from larger tires. This is a fully integrated system that brings precision, durability, and control to every mile.

Fits: 2023, 2024, 2025 Ford F250/F350 Super Duty

Notes:

• Fits 2023–2025 F-250/F-350 4WD gas trucks only.
• Not compatible with diesel, dually, or Tremor models.
• Provides 4.5" front and 5" rear lift height.
• Radius arms replace factory arms for added strength.
• Built-in caster cams allow on-vehicle adjustment.
• Rear lift achieved using heavy-duty fabricated blocks.
• Remote reservoir shocks require space for proper mounting.
• Shocks are tuned specifically for gas engine trucks.
• Adjustable track bar improves axle alignment and handling.
• Dual stabilizers help reduce tire feedback in steering.
• May require spacers or trimming with larger tires.
• Professional alignment is required after installation.
• All components are bolt-on, no cutting or welding needed.
• Shocks are fully rebuildable and re-tunable.
• Covered by ICON’s lifetime warranty on springs and fabricated components.