Steering Stabilizer Shock | Ford F250/F350 Super Duty (05-23) 4WDThe Zone Nitro Stabilizer uses a pressurized nitrogen charged twin tube design with 10 stage velocity sensitive valving for lightning fast dampening adaptive to whatever terrain you traverse on or off road. The 2 inch bodied shocks use a large 1 3 8 inch fluon banded piston, self lubricating seals and a 14mm hardened chrome shaft to help resist rock chips and corrosion.