Firestone Coil-Rite: 4136 Rear Kit






Designed and assembled in the USA and made specifically for vehicles with coil spring suspensions. Install Coil-Rite air springs on your SUV or sedan for better road handling.

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

    35 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 4136


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

Every road demands something of you and your vehicle, and so does every load. Firestone Coil-Rite air springs help you adapt to the job at hand. Coil-Rite stabilizes your vehicle to promote better braking and handling, even when hauling a heavy load or dealing with adverse road conditions. In turn, Coil-Rite air springs also help reduce tire wear and level your headlight beams.

Most SUVs and sedans with coil spring suspensions can take advantage of Coil-Rite air helper springs. They fit inside the 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's the benefit? A smoother ride for you and your passengers, and more responsive control as you let the miles roll.

Is Firestone Coil-Rite installation easy? You bet. Coil-Rite air spring kits are packed with everything you need for a quick, straightforward installation. Install times average less than two hours, and a majority of Firestone Coil-Rite kits do not require drilling. Coil-Rite springs are made from elastic polyurethane and connect to your vehicle's current spring seats. Air compressors, air tanks, gauges, and switches are sold separately. Purchase additional air accessories for your vehicle to monitor and adjust your air springs from inside your vehicle.

Once installed, Coil-Rite air bags adjust easily with individual inflation valves so you can maintain ride comfort and a centered load. A centered load reduces body roll to improve vehicle stability. By softening the interaction between your vehicle's frame and axles and absorbing road shock, Coil-Rite air springs also help prevent bottoming out.

And with Coil-Rite air springs, you don't have to worry about shifting seasons standing in your way of a job well done. Coil-Rite air helper springs are designed to continue performing in temperatures between -40F (-40C) and 180F (82C). Head north or south— drive where you want.

Coil-Rite air springs support 500 - 2,100 lbs. per set but will not increase your vehicle's weight-carrying capacity. Always confirm vehicle manufacturer recommendations for hauling or towing before loading up.

Shop online or point your dash in the direction of an authorized Coil-Rite retailer to buy a Firestone Coil-Rite air spring kit today.

How Can We Help You?

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