Firestone Ride-Rite air helper springs are heavy-duty, convoluted air springs that mount between the suspension and frame of your vehicle. They can improve ride and handling, increase traction, and reduce suspension fatigue. Ride-Rites are equipped with individual inflation valves, so you can level your vehicle front-to-rear or side-to-side when you're carrying off-center loads. They can boost your load-carrying capacity from 3,200 to 5,000 lbs. per set. Some drilling may be required.