Firestone Coil-Rite: 4185 Rear Kit






Install Coil-Rite air springs on your pickup truck for better road handling. Made with commercial-grade expertise and designed for Dodge RAM 1500s with coil spring suspensions.

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



  • min. air pressure

    minimum air pressure

    5 PSI

  • max air pressure

    maximum air pressure

    70 PSI

  • install time

    install time

    1 HOUR(s)

Air Accessory Systems

2158 Single Level Analog Standard Duty 2497
2178 Dual Level Analog Standard Duty 2497
2097 Single Level Analog Heavy Duty 2497
2219 Dual Level Analog Heavy Duty 2497
2543 Single Level Analog Heavy Duty With Tank 2530
2549 Single Level Analog Extreme Duty With Tank 2530
2610 Single Point Wirless (App Only) Light Duty 2612

Vehicles Compatible with 4185


RAM 1500 2WD, 4WD (2009-2009)

Exception Warning 2WD Not Power RAM or Rebel
4WD Not Power RAM or Rebel
2009 RAM 1500 2WD, 4WD

1500 2WD, 4WD (2010-2018)

Exception Warning 2WD Not Power RAM or Rebel. Fits both Gas and Diesel models
4WD Not Power RAM or Rebel. Fits both Gas and Diesel models
2010 1500 2WD, 4WD
2011 1500 2WD, 4WD
2012 1500 2WD, 4WD
2013 1500 2WD, 4WD
2014 1500 2WD, 4WD
2015 1500 2WD, 4WD
2016 1500 2WD, 4WD
2017 1500 2WD, 4WD
2018 1500 2WD, 4WD
Product 4185 Image

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

There's no such thing as a perfect load or perfect road conditions. That's one reason we designed Coil-Rite air springs. Coil-Rite levels your Dodge RAM 1500 to contribute to more effective braking and handling, even when handling poor road conditions and heavy loads. In turn, Coil-Rite pickup truck air springs also help limit tire wear and keep headlight beams even.
Coil-Rite air helper springs are made for pickup trucks with coil spring suspensions. They fit within the current coil springs to generate a variable spring rate. Variable spring rates lead to a higher spring rate in loaded conditions and a slower spring rate in unloaded conditions. The result? A gentler journey for everyone inside your pickup truck, and more responsive control while you navigate the road.
Is Firestone Coil-Rite installation easy? Yes. Your Dodge RAM 1500 Coil-Rite air spring kit contains all of the pieces necessary for a fast, simple installation. Install time averages one to two hours, and most Firestone Coil-Rite kits are no-drill. Coil-Rite air springs are crafted out of durable, elastic polyurethane and fasten to your RAM 1500's existing spring seats. Note that gauges, switches, air compressors, and air tanks are sold separately. The right air accessories make it easier for you to inflate or deflate your Dodge RAM 1500 air springs from the comfort of the driver's seat.
After installation, Dodge RAM 1500 Coil-Rite air helper springs adjust easily, from side to side, with independent inflation valves to support even load distribution and ride comfort. Maintaining a centered load helps curb body roll and improve vehicle stability. Dodge RAM 1500 Coil-Rite air springs also help prevent bottoming out by cushioning the interaction between your truck's axles and frame 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. Coil-Rite air helper springs are designed to continue performing in temperatures between -40F (-40C) and 180F (82C). Summer or winter, north or south— drive your truck where you want.
Dodge RAM 1500 Coil-Rite air springs support 500 - 2,100 lbs. per set but will not increase your truck's weight-carrying capacity. Review your Dodge RAM 1500 owner's manual for vehicle-specific recommendations before hauling or towing any size load.
Head to your local Coil-Rite retailer and get your Dodge RAM 1500 Firestone 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.