Firestone Coil-Rite air helper springs fit inside your existing coil spring suspension to create a variable spring rate. This allows you to adjust ride stiffness by inflating or deflating the air springs to match your load and road conditions.

Designed for cars, minivans, light trucks, RVs, and SUVs, the durable polyurethane construction operates safely from -40 to 180 degrees Fahrenheit. Simple installation requires no drilling, and you’ll gain better levelling, braking response, and handling without replacing your suspension.

• 1000 pound load capacity
• 5–35 PSI adjustable pressure range
• Polyurethane material, -40 to +180 degrees F rated
• Coil-spring mount design
• Air line included, no air compressor
• Fits inside existing coil springs
• Variable spring rate tuning
• No drilling required for installation
• Lifetime warranty on air springs
• 2-year warranty on hardware