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  1. Lunette Ring
  2. Shocker Hitch
  3. 3 Inch Lunette Ring
  4. Coupler Only
  5. Bolt-On
  6. 20000 lbs GTW
Shocker Hitch Air Cushioned Lunette Ring - 3" Diameter - Flat Plate Mount - 20K

Shocker Hitch Air Cushioned Lunette Ring - 3" Diameter - Flat Plate Mount - 20K

Our Price: $699.99
You Save: $60.00
Lunette Ring
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Shipping Weight: 64 lbs
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The easy-to-adjust air bag and cushioned bumpers on this lunette ring absorb road shock and reduce chucking, helping to protect your trailer from wear and tear. Flat plate bolts directly onto your trailer. Fastest Shipping and Great prices for Shocker Hitch Air Cushioned Lunette Ring - 3" Diameter - Flat Plate Mount - 20K. Read our customer reviews of Shocker Hitch lunette ring. Call 1-800-496-5010 for expert service or order your lunette ring part number SHK55RR by Shocker Hitch online at
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Shocker Hitch Lunette Ring

  • 3 Inch Lunette Ring
  • Coupler Only
  • Bolt-On
  • 20000 lbs GTW
  • Standard Coupler
  • Shocker Hitch

The easy-to-adjust air bag and cushioned bumpers on this lunette ring absorb road shock and reduce chucking, helping to protect your trailer from wear and tear. Flat plate bolts directly onto your trailer.


  • Shock-absorbing lunette ring uses an air bag and rubber bumpers to provide a smooth and comfortable ride
    • Limits chucking and jerking to give you better control of your tow vehicle and trailer
    • Helps extend the life of your truck and trailer by protecting them from unnecessary wear and tear
  • Adjustable air bag lets you easily adapt the lunette ring to suit your trailer's load
    • Ensures just enough shock absorption for your setup and not so much as to cause a stiff ride
  • Grease zerk fitting at the pivot point makes lubrication and maintenance easy
  • Grade 50 steel plates provide maximum durability
    • Shot blasted and powder coated to prevent rust
  • Flat mounting plate bolts directly to trailer
    • Hardware not included
  • Made in the USA


  • Gross towing weight: 20,000 lbs
  • Maximum tongue weight: 2,000 lbs
  • Lunette ring size:
    • Outside diameter: 6"
    • Inside diameter: 3"
  • Bolt hole diameter: 1"
  • Distance between mounting holes (center to center): 4-1/2"
  • 1-Year warranty

A Solution for Rough Rides

Have you ever hit a bump while towing and had that road shock jostle and shake you all the way down to your bones? It's a common feeling. Most lunette rings are made completely of metal, so there's nothing to help soften the shock when you hit a bump. This results in a bumpy, jerky ride that not only takes a toll on you as you drive, but it beats up your equipment too, leading to premature wear and tear on both your truck and trailer.

Fortunately, the Shocker Hitch lunette ring will change all of that.

Air Bag and Bumper Stop Shock Absorption Technology

Shocker Hitch Gooseneck Coupler

Using a built-in air bag and rubber cushions, the Shocker Hitch acts like a small suspension system between your truck and trailer. The air bag and bumpers help absorb road shock, creating a smoother, more comfortable ride while also protecting your truck and trailer from unnecessary wear and tear on the brakes, chassis, trailer frame, and suspensions.

Shocker Hitch Gooseneck Air Bag

The body of the Shocker Hitch Air lunette ring is designed to pivot back and forth on the pivot bolt, as the air bag and the cushioned bumpers take turns absorbing the road shock. When you hit a bump and your trailer bounces, the unit pivots so that the air bag can isolate and absorb the energy. When your trailer jerks forward or backward, the 2 cushioned bumper stops help soften the force.

Customize Amount of Shock Absorption

Shocker Hitch Gooseneck Coupler

Using the easily accessible air valve on the top of the unit, you can adjust the air pressure in the this Shocker Hitch lunette ring's air bag to best accommodate your trailer's load. If you're hauling heavy-duty landscaping equipment, for example, you can add air to account for the increased capacity. Once the equipment is unloaded, simply release some air so that your underloaded trailer won't experience a stiff ride.

SH-420-P Shocker Air Pintle Ring - Flat Plate Mount - 20,000 lbs

Item # SHK55RR

Video of Shocker Hitch Air Cushioned Lunette Ring - 3" Diameter - Flat Plate Mount - 20K

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Shocker Hitch Straight Tongue Trailer Coupler - Standard Coupler - SHK55RR

Hello everybody. This is Jeff at Today, we're gonna take a look at this Shocker Air lunette ring trailer tongue mount with the square plate mount. Has a 20,000 pound gross towing weight capacity. Now, this is a shock absorbing trailer lunette ring, which features this nice industrial strength air bag and these cushioned bump stops on each side here to help dampen any chucking and road shock. So, basically, this Shocker Air system is a miniature air suspension unit that mounts between your truck and your trailer.

Basically, they'll add life to your truck and your trailer by reducing wear and tear on the truck's driveline and frame as well as the frame of the trailer. So, they'll let you treat yourself, your equipment, and even your passengers to a lot smoother ride. As we mentioned, this does bolt to a trailer tongue flat plate on front of your trailer A-frame style trailer. It's often used on equipment and dump trailers. And it does fit the trailers with the square plate four-bolt mount.

Has a 4 1/2 inch square bolt pattern. And we mentioned that when we say 4 1/2 inch, that's the bolt pattern of these mounting holes. Center to center horizontally, 4 1/2 inches, and center to center vertically, 4 1/2 inches. Now, basically, this air hitch works like a seesaw with the air bag on one end and the trailer coupler on the other end. So, basically, when you're hooked up, as your trailer exerts force upward, downward, backward, forward, this unit will pivot.

And the air bag and the bump stops, one on each side here, help absorb the energy for a lot smoother ride. The pivot point is right down here. They do make, use grade 50 steel plate construction on this, and it is shot blasted and powder coated to prevent rust. And the air bag we mentioned right up here, it is easily adjustable. Right here, you can see it has a valve stem on it.

If you take off your valve cap, hook your air hose to that, pump air in or release air, whatever you need. Basically, it's adjustable. So, if you have heavier loads, you wanna add more air. If it's a lighter load, let some of the air out. And a way to tell how much air to put in there, what you wanna do is load your trailer the way it's gonna be when you tow it. And then inflate the air bag until these bump cushions right here on each side, they start to compress. Once they start to compress, that'll get you the correct air pressure in there. Put your valve cap on and you're all ready to go. If you notice on the pivot point right down here, on one side, they do have a grease zerk fitting here that allows you to connect your grease gun to and pump grease into the pivot point. Helps make maintenance very simple. And this part is made in the USA. Few specs, again, on this, the gross towing weight capacity is 20,000 pounds. Tongue weight capacity is 2,000 pounds. And the last thing I wanna give you is just the dimensions on the lunette ring. The overall diameter, which is gonna be measured from this end to this end, if we put a ruler on that, you can see is gonna be right at six inches. And then the inside diameter, which is the inside of the hole is right at three inches. But that should do it for the review on this Shocker Air lunette ring trailer tongue mount with the square plate mount and a 20,000 pound gross towing weight capacity..


See what our Experts say about this Shocker Hitch Lunette Ring

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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Mike S
Written by:
Mike S
Employee Justice A
Updated by:
Justice A

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