Fabtech 17-21 Ford F250/F350 4WD Diesel 8in 4Link Sys w/Coils & Dl Resi Shks

This 8-inch 4-link conversion system from Fabtech is built to give your 2017-2020 Ford Super Duty diesel the suspension performance it needs for both tough off-road trails and comfortable daily driving. It swaps out the stock radius arms for heavy-duty 4-link components, which not only adds strength but also improves how the suspension moves through its travel. This means you get better articulation off-road for tackling rough terrain and a more stable, less sensitive steering feel on the highway.

A standout feature of this system is Fabtech's extended-length, offset track bar. It's 4 inches longer than stock and uses a stout 1/4-inch thick steel bracket to help keep the track bar and drag link closer to parallel. This design combats the common steering box sensitivity in newer Super Duty trucks, providing more precise steering control. The system is designed to allow for full lock steering with tires up to 15.50 inches wide on wheels with 4.75 inches of backspacing. The 4-link arms themselves are constructed with 2-inch diameter heavy wall tubing and feature race-style 1-inch Uniballs for exceptional strength, proven over a decade in demanding commercial and military applications.

This kit comes complete with everything needed to convert your suspension: the 4-link arms, extended track bar, sway bar drops, track bar relocation bracket, pitman arm, U-bolt kit, and front and rear Dirt Logic 2.25-inch reservoir shocks. Fabtech also backs this system with a 5-year, 60,000-mile powertrain warranty for added peace of mind.