Firestone 6026 Coil-Rite Rear Air Helper Spring Kit for Coil Spring Suspensions

The Firestone 6026 Coil-Rite Air Helper Spring Kit is a medium-duty, air-adjustable suspension upgrade designed to fit inside existing rear coil spring suspensions. By creating a variable spring rate alongside the factory coil spring, the Coil-Rite system helps level your vehicle and improves handling, braking effectiveness, and overall ride comfort—even under heavy loads and adverse road conditions.

Constructed from durable, elastic polyurethane, these air helper springs are built to withstand the rigors of daily use. Air pressure is easily adjusted to match varying load conditions, making spring rate changes as simple as inflating a tire. Each air spring is pressure tested before leaving the factory and is rated for over 500,000 cycle life testing.

Key Features:

• Fits inside existing open coil spring suspensions—no drilling required
• Supports 500–1,000 lbs. per set (not to exceed vehicle GVWR)
• Creates a variable, adjustable spring rate superior to standard coil springs
• Durable elastic polyurethane construction for long-lasting performance
• Each air spring pressure tested at the factory
• Rated for over 1/2 million duty cycles
• Operating temperature range: -40°F to 180°F (-40°C to 82°C)
• Rear position; OEM reference number W237606026

What's Included:

• Air helper springs (pair)
• Air line
• Fasteners and hardware
• Manual inflation valves
• Supports (if required for application)
• Push-to-connect air fittings
• Detailed installation instructions

The Coil-Rite system increases vehicle stability by absorbing road shock, keeps the vehicle level to improve steering control and headlight aim, reduces tire wear, and provides a protective air cushion to soften contact between the axle and frame. Average installation time is approximately one hour. Optional air compressor accessories are available separately for on-the-fly inflation adjustments.