This suspension features luxury ride coil springs matching OE coils rates that are specifically designed for gas or diesel motors. A heavy duty track bar relocation bracket properly centers the axle and matches the steering angles created by the supplied drop pitman arm while the radius arm drop brackets maintain the Super Duty's O.E. caster angles. A steering stabilizer relocation bracket maintains proper steering control but a RC problem solver single unit is recommended with larger tires and a RC dual stabilizer is required when running 37in tires.Easy bolt-on installation  Increased ground clearance  Levels the front with the rear of the vehicle  Radius arm drop brackets allow for properly set caster. Proper caster is crucial to maintaining factory handling and driveability.  Includes application valved N3 series shock absorbers which offer the best in balanced performance for on and off-road use.Does NOT fit diesel engine models.  Does NOT fit dually models.  If vehicle is equipped with rear overload leafs, they will need to be removed.6-8 hoursLifted coil springs  Radius arm drop brackets  Extended sway-bar links  Track bar drop bracket  Stabilizer relocation brackets  Pitman arm  Stainless steel braided brake lines  Bumpstop spacers  Hardware3in lift blocks  Add-a-leafs  Carrier bearing drop bracket  U-bolts  Hardware2008-2010:4WD:Ford:F-250 Super Duty;2008-2010:4WD:Ford:F-350 Super Duty