If you own a Freightliner FLC120 and want to boost your truck's performance, upgrading with top-quality air springs and level valves is the way to go. These parts are key for maintaining a smooth ride and proper height control, giving you stability and comfort on the road. Air springs enhance your air ride by absorbing bumps, while level valves ensure your truck stays at the right height. Whether you need aftermarket or OEM replacement parts for a truck upgrade, focusing on high-quality suspension parts is a must. With options like air bag valves and leveling systems, you can easily upgrade your Freightliner suspension, making every drive more comfortable and reliable. Get the parts you need and can trust at 4 State Trucks!