4.5" Lift Stage 4 Suspension System Kit w/ Expansion Packs

Features:

• 4.5" front lift for diesel 4WD models
• 2" rear lift using leaf expansion packs
• Dual-rate coil springs improve ride quality
• Remote reservoir shocks run cooler off-road
• Up to 50% more front wheel travel
• Radius arm brackets correct alignment geometry
• Adjustable track bar centers front axle
• Dual stabilizers reduce steering vibration
• Corrosion-resistant anodized shock bodies
• Stainless braided front brake lines included
• Shocks are fully rebuildable and tunable
• Backed by ICON lifetime component warranty

Make Your Super Duty Feel Built Not Bought

If your 2023-2025 Super Duty looks the part but still rides like it’s stuck in stock form, the ICON Stage 4 Suspension System with Expansion Packs is the upgrade that finally matches muscle with performance. This kit doesn’t just lift your truck, it transforms how it feels on the road and off of it. You’ll gain a true 4.5 inches of front lift, with 2 inches in the rear thanks to premium leaf spring expansion packs that ride smoother than traditional lift blocks. Whether you’re hauling a trailer, crawling through rocky access roads, or cruising down washboard gravel, the dual-rate coil springs and remote reservoir shocks work together to soak up the abuse while keeping your ride controlled. Steering stays tight and responsive thanks to dual opposing stabilizers, and you’ll notice the difference as soon as you hit uneven pavement or trail ruts. Everything is built with purpose, from the stainless steel brake lines to the geometry-correcting drop brackets. It’s the kind of upgrade that makes your truck not only taller but tougher, smoother, and more capable everywhere you take it.

Tuned Suspension Performance With Real World Engineering

Every part of the ICON K64544L Stage 4 System is engineered to work as a unified, high-performance suspension package for 4WD diesel Super Duty trucks. The 2.5 Aluminum Series shocks come with remote reservoirs designed to keep fluid temps in check during heavy-duty use, especially on long trails or high-load situations. Up front, the dual-rate coil springs deliver a plush feel under light loads while transitioning into a firmer spring rate during compression to resist bottoming out. Out back, ICON swaps traditional lift blocks for leaf spring expansion packs that improve small bump compliance and reduce axle wrap under throttle. An adjustable track bar helps align the front axle correctly after the lift, working with the drop bracket to correct bump steer and improve steering feel. Radius arm brackets maintain proper caster, which keeps the truck tracking straight and stable at highway speeds. With shocks that are fully rebuildable and components backed by a lifetime warranty, this system is designed for long-term performance with serious off-road and towing capability in mind.

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

Notes:

• Only compatible with 4WD diesel F-250 and F-350 trucks.
• Not designed for gas models or Cab & Chassis variants.
• Front lift height may vary based on vehicle setup.
• Rear lift achieved using leaf expansion packs, not blocks.
• Includes extended brake lines, bump stop spacers, and brackets.
• Manual alignment correction is required after installation.
• 37" tires recommended max with correct offset wheels.
• Larger tires may require trimming or additional clearance work.
• OEM wheels may be reused depending on tire size.
• Shocks are fully rebuildable and can be retuned as needed.
• Remote reservoirs improve shock performance during extended use.
• Lifetime warranty on springs and fabricated components.