Discover the difference Coil-Rite air helper springs can make in improving the ride, handling and braking of your vehicle. Coil-Rite air helper springs provide extra support for coil springs in cars, minivans, vans, light trucks, RV’s and SUV’s. The adjustable Coil-Rite air helper springs will level your vehicle, provide a smoother ride, and assist with more effective braking and handling, even under heavy loading and adverse road conditions. Coil-Rite air helper springs are designed to fit inside existing coil spring suspensions, creating a variable rate spring. These air helper springs are made of durable, elastic polyurethane, providing years of comfort and stability to your vehicle. Firestone’s Coil-Rite air helper springs enable adjustment for varying loads and road conditions by controlling the air pressure in the air helper springs. Spring performance can be altered as easily as inflating a tire. The air springs will support 500 To 1000 Pounds per set. Features Made Of Durable Polyurethane To Withstand The Rigors Of Coil-Sprung Suspensions. Increase Vehicle Stability: Absorbs Road Shock Providing A Smooth Ride For Passengers And Load. Keep The Vehicle Level: Improves Steering Control And Braking Effectiveness, Levels Headlight Beams And Reduces Tire Wear. Reduce Bottoming Out: Protective Air Cushion Softens Contact Between The Axle And Frame. No Drill Installation. Everything Is Included For A Quick, Easy Installation. Brackets, Air Springs, Hardware, Air Line, And Separate Valves For Manual Inflation. Weight: 3 lbs.. Type: Air Spring. Load Capacity : 500 To 1000 Pounds. Material: Polyurethane. Mounting Type: Inside Coil Spring. Color: Black. Pressure Range ( PSI): 5 To 35 Pounds Per Square Inch. Fits for various make and model.