ICON Vehicle Dynamics 2005-2019 Ford F-250/F-350 Super Duty 2.5" Dual Rate Front Coil Spring Kit

The ICON Vehicle Dynamics Dual Rate Front Coil Spring Kit lifts 2005–2019 Ford F-250 and F-350 Super Duty trucks 2.5" and is engineered for drivers who want improved wheel travel, larger tire clearance, and a ride that holds up both on pavement and off. The kit includes caster correction cams and is a 100% bolt-on system. Springs are optimized for diesel-engine Super Duty trucks.

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.

Dual Rate Design: On-Road Comfort and Off-Road Resistance in One Spring

The dual rate coil spring uses a softer initial spring rate for everyday driving, reducing the harshness that comes with a lifted truck on paved roads. As the suspension compresses further under load or rough terrain, the spring transitions to a firmer secondary rate that resists bottoming out. A single spring handles both conditions without requiring a separate bypass or add-a-leaf setup.

Caster Correction Included

Adding 2.5" of lift changes the front caster angle, which affects steering feel and tire wear. ICON includes a caster correction cam kit in the box so the geometry can be dialed back in at installation without sourcing a separate part. The bolt-on design requires no cutting or welding.

Corrosion-Resistant Finish

Each spring receives a dual-stage, semi-gloss powder coat that resists corrosion from road salt, mud, and water exposure. This finish is relevant for a suspension component that lives under the truck year-round.

Features

• 2.5" lift height: raises the front of 2005–2019 Ford F-250 and F-350 Super Duty trucks
• Dual rate spring: softer initial rate for on-road comfort, firmer secondary rate for bottoming resistance off-road
• Caster cam kit included: restores proper caster angle at the new ride height
• Dual-stage semi-gloss powder coat: corrosion-resistant finish for long-term durability
• 100% bolt-on installation: no cutting or welding required
• Lifetime warranty against sagging/breakage

Specifications

Who This Is For and Isn't

This kit suits 2005–2019 Ford F-250 and F-350 Super Duty owners, particularly those running diesel engines, who want 2.5" of front lift, improved wheel travel when paired with ICON shocks, and the ability to run up to 35×12.50" tires on factory or compatible aftermarket wheels.

This kit does not include rear lift components. 2005–2016 F-250 owners will need a separate 4" rear block kit and 15" U-bolt kit (ICON #194275 plus #37003 for 2005–2010 or #67003 for 2011–2016) to bring the rear level with the lifted front. Tires larger than 35×12.50" may require fender trimming and additional modifications. This kit covers the front axle only and does not include shocks.

Common Questions

Does this kit include shocks?

The ICON Dual Rate Front Coil Spring Kit does not include shocks. The springs are designed to work with ICON shocks to maximize wheel travel, but shocks must be purchased separately. ICON notes that increased wheel travel is realized when the springs are used in combination with compatible ICON shock absorbers.

Do 2005–2016 F-250 trucks need any additional parts to sit level?

Yes. On 2005–2016 Ford F-250 trucks, adding 2.5" of front lift requires a 4" rear block kit and a 15" U-bolt kit to bring the rear ride height level with the front. ICON recommends block kit #194275 paired with U-bolt kit #37003 for 2005–2010 models or #67003 for 2011–2016 models; these are sold separately.

What wheel and tire sizes are recommended with this lift?

ICON recommends aftermarket wheels sized 17×8.5" with 5.00" backspace and 6mm offset, 18×9" with 5.25" backspace and 6mm offset, or 20×9" with 5.25" backspace and 6mm offset. For tires, 35×12.50" fits without modification; larger tires may fit but could require fender trimming and other modifications.

Is this a bolt-on installation?

The ICON Dual Rate Front Coil Spring Kit is a 100% bolt-on system, meaning no cutting or welding is required. The included caster correction cam kit allows the installer to restore proper caster angle at the new ride height without sourcing additional hardware.

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