ICON Stage 5 Coilover Conversion with Radius Arm for 2008-2010 Ford F-250/F-350 4WD

The ICON Stage 5 Coilover Conversion with Radius Arm is a complete front and rear suspension upgrade for 2008–2010 Ford F-250 and F-350 4WD trucks, delivering 4–5.5 inches of ride-height-adjustable lift over stock. Springs in this system are rated for diesel engines only. The system ships in multiple boxes and includes all components listed below.

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.

Height Adjustability Without Sacrificing Ride Quality

The 2.5 VS RR CDCV bolt-in coilover conversion mounts in the factory coil bucket location, so no cutting or major fabrication is required during installation. Ride height can be dialed anywhere in the 4–5.5 inch lift window after the truck is built, letting the owner fine-tune stance for load, terrain, or tire size without pulling the suspension apart. Vehicle-specific shock valving is calibrated for the F-250/F-350 platform, and all shocks are fully rebuildable and revalveable for long-term serviceability.

Radius Arm System Built for Clearance and Caster Control

The fabricated, fully boxed radius arms use a sealed pivot bushing to minimize road feedback and reduce noise over the life of the system. The arm profile is optimized for tire clearance at full steering lock, allowing a 37-inch tall tire to clear without contacting the radius arm. Drop brackets provide on-vehicle caster adjustment, which is important when correcting geometry after a significant lift. The adjustable track bar with FK rod end bearing further refines front-end geometry and reduces deflection under load.

Component List

This Stage 5 system includes: front 4.5-inch box kit (64050); 4–5.5-inch 2.5 VS RR CDCV bolt-in coilover conversion kit (61721C); adjustable track bar with FK rod end (64035); radius arm system (64041); radius arm drop kit (64040); dual stabilizer kit (65000); dual opposing 2.0 VS IR stabilizers, qty 2 (36511); 5-inch rear block kit (195275); rear 17-inch U-bolt kit (37002); and rear 2.5 VS PB CDCV pair (37701CP).

Features

• Eibach coil springs: guaranteed for life against sagging or breakage
• Corrosion-resistant shock body: CAD-plated coilover body with 7/8-inch shaft; rear shocks use one-piece impact-extruded aluminum cylinders
• FK rod end bearings: extended longevity and minimal deflection on the adjustable track bar
• Fully rebuildable shocks: all shocks are rebuildable and revalveable for long-term use
• Coilover conversion: allows addition of a secondary shock (options available separately)
• Bolt-in front fitment: mounts in OE coil bucket location; coil centering cup removal required

Specifications

Who This Is For and Isn't

This system suits 2008–2010 Ford F-250 and F-350 4WD owners running diesel engines who want 4–5.5 inches of adjustable lift, improved front and rear ride dynamics, and the ability to run up to a 35-inch tire without fender modification. It is well matched to trucks used in mixed on-road and off-road conditions where ride quality and long-term serviceability both matter.

This system fits diesel-engine models only; springs are not rated for gas-engine F-250 or F-350 trucks. It does not fit 2WD models or model years outside 2008–2010. A carrier bearing drop bracket kit (part 33700) may be required and is sold separately. Tires larger than 35 x 12.50 inches may fit but will require fender trimming and additional modifications.

Common Questions

Does this system fit a gas-engine F-250 or F-350?

No. The coil springs in this Stage 5 coilover conversion are rated for diesel engines only. A gas-engine F-250 or F-350 requires a different spring specification; this system should not be used on gas-powered trucks.

What lift height does this system provide?

This Stage 5 coilover conversion provides 4–5.5 inches of lift over stock on a stock-equipped 2008–2010 Ford F-250 or F-350 4WD. The coilover allows end-user ride height adjustment anywhere within that range after installation.

Is a carrier bearing drop bracket included?

A carrier bearing drop bracket kit (part 33700) may be required for this Stage 5 coilover conversion but is not included in the system. Whether it is needed depends on the specific truck; it is sold separately.

What is the largest tire this system supports without fender modification?

The Stage 5 coilover conversion is designed to clear a 37-inch tall tire at full steering lock at the radius arm. The recommended aftermarket tire size is 35 x 12.50 inches without fender modification; larger tires may fit but will require fender trimming and additional modifications.

Are the shocks rebuildable?

Yes. All shocks included in this Stage 5 coilover conversion are fully rebuildable and revalveable, supporting long-term serviceability and the ability to retune damping as the truck's use or tire load changes over time.