Firestone 4169 Coil-Rite Air Helper Spring Kit

The Firestone Coil-Rite Air Helper Spring Kit is engineered to deliver enhanced ride quality, load support, and vehicle stability for vehicles equipped with coil spring suspension systems. This innovative kit installs directly inside your existing coil springs to create a variable spring rate that adapts to changing load conditions and road surfaces.

Key Features:

• Designed to fit inside existing coil springs without requiring suspension modifications
• Adjustable air pressure allows customization for varying loads and road conditions
• Supports 500-1,000 lbs. per set (must not exceed vehicle's GVWR)
• Constructed from durable, elastic polyurethane for long-lasting performance
• Improves vehicle leveling, braking effectiveness, and handling under heavy loads
• Operates reliably in extreme temperatures from -40°F to 180°F (-40°C to 82°C)
• Adjustments are as simple as inflating a tire—no special tools required

The Coil-Rite system gives you on-demand control over your vehicle's suspension characteristics, allowing you to increase spring rate when hauling heavy cargo or towing, and reduce pressure for a more comfortable unloaded ride. This versatility makes it an ideal solution for trucks, SUVs, and vans that experience variable loading conditions. Installation is straightforward, and the polyurethane construction ensures years of reliable service in harsh environments and demanding applications.