Heavy Duty Fleet Gas Shocks

World Leading Quality

FCS is a World Leading Manufacturer of Heavy Duty & Light Vehicle Ride Control Products

FCS is a world-leading manufacturer of heavy duty and light vehicle ride control products, serving both aftermarket and commercial vehicle markets on a global scale.

As the #1 North American aftermarket supplier of light vehicle strut assemblies—producing over five million units annually—FCS brings proven manufacturing experience and scale to every product line.

With a worldwide footprint in commercial vehicle supply and distribution across more than 40 countries, FCS supports customers through a global network backed by certified manufacturing.

In North America, over 600,000 square feet of dedicated distribution space ensures consistent product availability and reliable service.

GET TO KNOW nitrogen gas charged shocks

How Gas-Charged Shocks Work

Gas-charged shocks add nitrogen to the original hydraulic shock design to enhance performance for a more responsive, smoother ride. Inside the shock, a low-pressure charge of nitrogen gas is added in the chamber above the hydraulic oil to minimize aeration of hydraulic fluid. This helps significantly reduce fade, minimize vibrations, and extend service life.

Why Gas Charging Improves Ride Performance

Gas charging minimizes hydraulic fluid aeration, which causes foaming. Aeration negatively impacts ride performance. The addition of nitrogen gas to the shock assembly compresses air bubbles in the hydraulic fluid and prevents the oil and air from mixing to create foam. By reducing aeration, the gas-charged shock is more responsive and performs better by providing more consistent dampening.