Fabtech's 8in Super Duty suspension systems incorporate their proven Radius Arm and 4 Link designs with an all new offset Track Bar system specifically for the late model Super Duty platform. This innovative Track Bar system addresses the hyper sensitive steering box of the Ford Super Duty when increasing the ride height to 8in and running oversized tires. Fabtech is the only manufacturer with this ground breaking system that offers proper steering performance. Fabtech's extended length Track Bar is 4in longer than stock and is offset to the driver side with a stout 1/4in thick steel mounting bracket. This design helps keep the Track Bar and Draglink closer to parallel than the factory angle to reduce push in the steering. The Track Bar allows for full lock steering of 15.50 wide tires w/ 5in BS wheels. The 8in System is available with heavy duty tubular Radius Arms or 4 Link Conversion System for outstanding on and offroad performance. Front spring options include performance Coil Springs or the Dirt Logic 4.0 Coilover Conversion system for maximum damping capacity. Dirt Logic 2.25 Stainless Steel shocks are included with these systems for a superior ride quality. These high end 8in Systems are the pinnacle of quality and ride performance for the 2017 Super Duty. Each system is a bolt on installation and comes with Fabtech's 5 year 60,000 mile warranty.