Brand New BDS NX2 Single Steering Stabilizer Shock (Part #BDS85431). Upgrade your vehicle with BDS NX2 Nitro Series Steering Stabilizer shocks for high-end performance at an affordable price. They use 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. Polyurethane bushings and metal sleeves are included to make swapping over your shocks a breeze. Fits: Ford: 2017-2026 F-250 Super Duty 4WD 2017-2026 F-350 Super Duty 4WD Note: Only works in conjunction with a BDS 4-8" kit with the track bar drop bracket. Features: Durable metallic silver finish Vehicle specific valving for better control High-end performance at an affordable price Lightening fast dampening adaptive to terrain Large fluon banded piston with self lubricating seals Specs: Compressed Length: 14.3 Cylinder Diameter: 2.000" Cylinder Material: Steel Extended Length: 23.92 Lower Mount Type: EB1 Upper Mount Type: EB1 You can view and download the assembly instruction booklet here.