Pro Comp Nitro Kits are the economical alternative to a complete suspension system. They are designed to add larger aftermarket wheels and tires to your rig without installing a complete suspension lift kit. This solution leaves the factory steering geometry intact, preserving factory ride quality and ground clearance of vehicle Nitro Leveling Lift Kit Pro Comp 3.5" for Ford F250 4WD 2005-2007Front Lift: 3.5''(8.5cm),Rear Lift: 1''-3''(2.5-7.5cm),Coil Spring Spacers,Shock Relocation Mounts,Front Track Bar Drop ,Front Bump Stop Extension,Brake Line Drop,Rear Blocks and U-Bolts,