Zone Offroad 4" Radius Arm Suspension System 08-10 Ford F-250 / F-350 SuperDuty

Bring your SuperDuty to new heights with this complete suspension system from Zone! This Zone Offroad 4" radius arm suspension lift features tough replacement radius arms that are considerably stronger, made of 1/4" steel, fully boxed, and utilizing large 2-1/2", greasable urethane bushings. The arms bolt directly into the stock location, and position the axle for the proper caster and wheel location. The lower mount point at the axle utilizes our popular cam lock design, making it adjustable for 4" or 6" of lift. Engine specific front coil springs are designed to not only ride great, but will hold up over the long haul. A 1-1/2" solid steel track bar is included to properly center the axle after lifting. This track bar features new oversized, high-durometer (hardness) urethane bushings for long term performance and improved handling. The rear is lifted with a 5" block used to replace the factory block instead of stacking blocks. This system is also one of the easiest installations on the market because of the use of a front track bar and rear block kit. If you are looking to not only lift your Super Duty, but improve the looks, strength, and feel of your suspension, choose the Zone Offroad radius arms system. Shock Options - We offer this kit with several shock options: No Shocks: If you'd rather supply your own shocks, no problem, we give you this option. Nitro Series Shocks: Zone Nitro Series shock absorber offers stock-like control and performance with fully displaced valving for improved compression and extension travel. This vehicle specific valving is pressurized with 50 psi nitrogen gas; this gas charge ensures split second response and reduced aeration. Combine these features with the special Fluon-banded piston and this shock is built to perform! Fox Adventure Series Shocks: Built specifically to compliment your Zone lift kit, FOX's proven damping technology provides a comfortable on-road ride and predictable off-road handling in a variety of conditions. Their monotube design uses an internal floating piston (IFP) to separate the shock oil from the high-pressure, nitrogen-charged gas chamber, preventing oil aeration for fade-free performance in rough terrain.