Firestone Coil-Rite: 4108 Rear Kit






Maintain a balanced load and a smooth ride. Get Coil-Rite air springs for your SUV today.

Available To Purchase Online
Where To Buy

Details & Benefits

  • Designed to work in temperatures between -40˚F (-40˚C) and 180˚F (82˚C)
  • Easily control air pressure in the air springs for varying loads and conditions
  • Spring performance can be altered as easily as inflating a tire
  • Made of durable, elastic polyurethane
  • Fill kit

    fill kit


  • load capacity

    load capacity


  • installation


    No Drill

  • in-bed hitch


    Not Compatible

  • min. air pressure

    minimum air pressure

    5 PSI

  • max air pressure

    maximum air pressure

    25 PSI

  • install time

    install time

    1 HOUR(s)

Air Accessory Systems

2097 Single Level Analog Heavy Duty 2497
2158 Single Level Analog Standard Duty 2497
2178 Dual Level Analog Standard Duty 2497
2219 Dual Level Analog Heavy Duty 2497
2538 Single Level Analog Light Duty 2497
2581 Dual Level Wireless Light Duty 2588
2589 Dual Level Wireless Standard Duty 2588
2610 Single Point Wirless (App Only) Light Duty 2612

Vehicles Compatible with 4108


What's Included

Everything is included for a quick, easy installation.

  • Air springs
  • Hardware
  • Air line and separate valves for manual inflation, the same as you would use for inflating a tire

Optional air accessories are available for all applications. 

Additional Info

Road conditions and load demands always change. That's why Firestone makes Coil-Rite air springs. Coil-Rite technology balances your SUV to assist in better braking and handling, even when hauling a heavy load or dealing with adverse road conditions. As a result, properly installed Coil-Rite SUV air springs also help reduce tire wear and level your headlight beams.

Most SUVs with coil spring suspensions can take advantage of Coil-Rite air helper springs. They sit inside your existing coil springs to create a variable spring rate. Variable spring rates offer a slower spring rate in unloaded conditions and a higher spring rate in loaded conditions. What does that lead to? A steadier ride for your passengers, and more responsive control as you add miles to the odometer.

Is Firestone Coil-Rite 4108 installation pretty straightforward? Yes. Coil-Rite air spring kits come with all of the pieces necessary for a fast, easy installation. Most Firestone Coil-Rite SUV kits are no-drill, with install times averaging one to two hours. Coil-Rite air helper springs are manufactured out of elastic polyurethane and fasten to your SUV's current spring seats. Gauges, switches, air compressors, and air tanks are sold separately. Purchase additional air accessories for your SUV to inflate and deflate your air springs from the comfort of your cab.

After installation, Firestone 4108 Coil-Rite air helper springs adjust easily, from side to side, with independent inflation valves to support a smooth ride and balanced load distribution. A centered load reduces body roll to enhance vehicle stability. Coil-Rite air springs also reduce your chances of bottoming out by softening the interplay between your SUV's frame and axle, and absorbing road shock.

And with Coil-Rite air springs, you don't have to worry about shifting seasons standing in your way of a job well done. Firestone Coil-Rite air springs were made to function in temperatures between -40F (-40C) and 180F (82C). Summer or winter, north or south— take your vehicle where you want to go.

Firestone 4108 Coil-Rite air springs support 500 - 2,100 lbs. per set but will not increase your SUV's weight-carrying capacity. Review your owner's manual for vehicle-specific recommendations before hauling or towing any size load.

Locate your nearest Coil-Rite retailer and get your Firestone 4108 Coil-Rite air spring kit.

How Can We Help You?

Please contact us for more information on how to improve the comfort of your ride.