ICON K64544 4.5" Lift Stage 4 Suspension System Kit | 2023-2025 Ford F250/F350 Super Duty DIESEL

Features:

• 4.5" front lift for 4WD diesel models
• Dual-rate coils balance comfort and control
• 2.5" remote reservoir shocks for cooler temps
• 50% more front wheel travel than stock
• Adjustable track bar improves steering feel
• Radius arm brackets correct caster geometry
• Dual stabilizers reduce tire shimmy and feedback
• Heavy-duty rear lift blocks, not leaf packs
• Braided stainless steel front brake lines
• Corrosion-resistant hard anodized shock bodies
• Shocks are fully rebuildable and re-tunable
• Lifetime warranty on springs and fab parts

Take Your Super Duty Beyond Stock Limits

If you're ready to upgrade your 2023-2025 Super Duty into something that actually matches its name, the ICON 4.5" Stage 4 Suspension System is the kind of transformation that delivers real, usable gains. This setup isn't just about ride height, though it does give you a clean 4.5 inches of front lift and room to clear aggressive tires. What really makes it stand out is how much better your truck will handle on rough terrain, towing jobs, or even just daily driving. The dual-rate coil springs give you a smoother ride when cruising but kick in with added firmness when you’re loaded down or tackling uneven ground. With remote reservoir shocks at all four corners, this system manages heat like a pro, giving you consistent performance even on long, punishing drives. You’ll also notice tighter steering control thanks to the included dual opposing stabilizers that fight feedback from big tires and rough roads. Whether you're climbing through backcountry trails or hauling gear to a job site, this kit helps your Super Duty feel more confident, planted, and capable in every scenario.

Engineered Suspension Performance You Can Feel

At the heart of the ICON Stage 4 system is a carefully tuned balance of strength, control, and drivability built specifically for 4WD diesel-equipped F-250 and F-350 trucks. The 2.5 Aluminum Series shocks feature remote reservoirs designed to keep temperatures stable during prolonged off-road use, minimizing fade and maintaining precise damping. Dual-rate front coil springs are tuned to provide a soft initial rate for comfort and a firmer secondary rate for bottom-out resistance when terrain gets rough. Radius arm drop brackets are included to retain proper geometry and caster alignment, which helps avoid wandering and keeps your truck tracking straight. The adjustable track bar allows you to dial in axle positioning, reducing bump steer and improving overall handling. Heavy-duty 5-inch rear blocks, paired with extended U-bolts, maintain ride quality while lifting the rear to match the front. From daily use to demanding off-road conditions, every component in this kit is designed to work together as a complete suspension system with long-term durability and vehicle-specific tuning.

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

Notes:

• Only fits 4WD diesel F-250 and F-350 models.
• Will not fit F-350 Cab & Chassis configurations.
• Designed for use on stock-weight vehicles only.
• Tremor models may see reduced front lift height.
• Supports up to 37" tires with proper wheel offset.
• Trimming may be required for larger tire setups.
• OEM wheels may be reused depending on tire size.
• Shocks are fully rebuildable and serviceable.
• Remote reservoirs help control shock heat off-road.
• Kit includes brake line extensions and bump stops.
• Manual alignment adjustments required after install.
• Lifetime warranty on coil springs and fabricated parts.