"If you're looking to go to the next level with the front suspension of your Super Duty then this 6"" Coilover Conversion system is just the ticket. It allows the installation of the massive Dirt Logic 4.0 Resi Coilover. The Dirt Logic 4.0 is largest Coilover you can buy for your Super Duty and will provide an outstanding highway ride while being able to tackle rough offroad conditions. This Super Duty Coilover Conversion utilizes the factory upper coil spring bucket with heavy duty double shear brackets to mount the Dirt Logic 4.0. This design is simplistic yet is extremely strong and will hold to punishing offroad use. The Dirt Logic 4.0 is built with a stainless steel body for maximum corrosion resistance in harsh environments. The coil spring surrounding the stainless steel body is a dual rate spring for a progressive ride quality. These Coilovers have gone through extensive ride tuning to establish valving that you will appreciate the moment you drive the vehicle. | Fabtech 6"" Coilover Conversion Kit K2135DL"