ICON 2017+ Ford F-250/F-350 4.5in Stage 5 Suspension System

ICON's Stage 5 is their top-tier suspension package for 2017-2021 Ford F-250 and F-350 Super Duty trucks, and the key upgrade over the lower stages is the inclusion of the ICON 4-Link kit. Factory radius arms on Super Duty trucks create suspension bind during articulation, which limits wheel travel and makes the ride feel stiff when the suspension is working hard. The 4-Link conversion eliminates that bind entirely and maintains positive caster angle through the full range of travel, which translates to a noticeably better ride both on-road and off.

Beyond the 4-Link, this system includes everything you need for a complete 4.5-inch lift: dual rate coil springs, an adjustable track bar, a 5-inch rear block kit, and ICON's CDC Valve 2.5 Aluminum Series piggyback reservoir shocks at all four corners. Each shock has 10 externally adjustable compression settings, so you can soften the ride for highway towing or firm things up for trail use without pulling anything apart.

One thing to be aware of: gas-engine Super Duty models from 2008 and up may need exhaust modifications to clear the front driveshaft after the 4-Link installation. Diesel trucks typically do not have this issue. All components in this kit are tested and tuned together by ICON as a matched system, and the shocks are fully rebuildable and re-tunable down the road.