The Rough Country 6" lift kit for the Ford F250 Super Duty features engine specific coil springs matching OE coil rates. Also included are radius arm brackets, trac bar relocation bracket, sway bar drop brackets, brake line brackets, stainless steel brake lines, pitman arm, steering stabilizer relocation bracket, carrier bearing bracket, a fabricated anti-wrap block kit and 4 RC Nitro shocks. Shock boots sold separately. The specially designed anti-axle wrap rear blocks maintain stock ride quality while eliminating common lift block problem. This combination of components using the heavy duty trac bar bracket properly centers the axle and matches the steering angles created by the supplied pitman arm while the radius arm brackets maintain the OE caster angles. This is a bolt-on installation that will increase ground clearance. A dual steering stabilizer is highly recommended when running 37" tires.