1. Fifth Wheel King Pin
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  8. 7028
5th Airborne Premium Fifth Wheel Air Ride Coupler - Extended - 12-1/2" Wide Air Ride

5th Airborne Premium Fifth Wheel Air Ride Coupler - Extended - 12-1/2" Wide Air Ride

Item # 5AB-E510-710
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Fifth Wheel King Pin
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Fifth Wheel King Pin 5AB-E510-710 - Reduces Bounce and Jarring - Reese
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The 5th Airborne premium fifth wheel air-ride coupler acts as a buffer between the tow vehicle and the trailer, minimizing the abuse sustained from turbulence on the road and giving you the smoothest ride possible by reducing shock. Call 800-298-8924 to order Reese fifth wheel king pin part number 5AB-E510-710 or order online at etrailer.com. Free expert support on all Reese products. Guaranteed Lowest Price and Fastest Shipping for 5th Airborne Premium Fifth Wheel Air Ride Coupler - Extended - 12-1/2" Wide Air Ride. Fifth Wheel King Pin reviews from real customers.
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  • Reviews (12)
  • Q & A (77)
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Reese Fifth Wheel King Pin - 5AB-E510-710

  • 500
  • 503
  • 765
  • 770
  • 1716
  • 7028
  • Fabex
  • Lippert
  • RBW
  • Reduces Bounce and Jarring
  • Reese
  • 21000 lbs GTW
  • Pin Box Upgrade
  • Cushioned
  • Fixed Turret

The 5th Airborne premium fifth wheel air-ride coupler acts as a buffer between the tow vehicle and the trailer, minimizing the abuse sustained from turbulence on the road and giving you the smoothest ride possible by reducing shock.


  • Pre-assembled for quick and easy installation
  • Bolts onto trailer using existing holes and hardware
  • Cushions shock with adjustable air spring and shock absorber
    • Reduces longitudinal shock (chucking) by nearly 60%
    • Decreases vertical shock by 44%
    • Relieves stress on coach frame
    • Reduces vibration inside coach and protects contents
    • Smoother ride means less fatigue for driver and passengers
  • Air spring is enclosed within the coupler for protection against the elements
  • Streamlined, aerodynamic design


  • Capacity: 21,000 lbs
  • CSA approved
  • 3-Year limited warranty
  • Designed for use with the following pin boxes:
    • Fabex (500, 503, 765, and 770)
    • Lippert (1716)
    • RBW (7028)


5th Airborne Premium Fifth Wheel Air-Ride Coupler

  • 1. Rear mounted, heavy-duty shock absorber
  • 2. Enclosed air spring also absorbs shock
  • 3. King pin - connects to the fifth wheel trailer hitch in the truck bed
  • 4. Pivot point - allows king pin to move up and down

Note: It is recommended that if sitting idle for more than a week, that the air springs be drained to relieve pressure on the system

5AB-E510-710 5th Airborne Premium Fifth Wheel Air Ride Coupler - Extended - 12-1/2" Wide Air Ride

Installation Details 5AB-E510-710 Installation instructions

California residents: click here

Customer Reviews

5th Airborne Premium Fifth Wheel Air Ride Coupler - Extended - 12-1/2" Wide Air Ride - 5AB-E510-710

Average Customer Rating:  4.7 out of 5 stars   (12 Customer Reviews)

The 5th Airborne premium fifth wheel air-ride coupler acts as a buffer between the tow vehicle and the trailer, minimizing the abuse sustained from turbulence on the road and giving you the smoothest ride possible by reducing shock.

- 5AB-E510-710

Little disappointed, specs say 12 1/2 in. It’s 12 1/4. Well my pin box is 12 1/2 not 12 1/4, not good. NO where in the installation instructions does it mention the spacer kit. So for another $50 I have to buy one. At least add a note that the kit may need to be added. 643257

- 5AB-E510-710

Got it Installed ! Too heavy to install without some kind of Lift Equipment , or a couple strong friends . Works good, but still trying to get it .... Fine Tuned for the best ride ( Air Pressure and the slotted air bag placement ) Did not seem to help at all on the ..... Chucking Problem . 513788

The pin box itself is one element that can cause chucking. The design of the hitch jaw slide bar type jaws can allow a lot of movement of the king pin and even the way the brake controller is adjusted can all allow chucking. Starting the air pressure out around 80 psi is recommended. If the ride is harsh, let pressure out about 5-10 psi at a time until the ride becomes smoother.
-- Mike L - 05/30/2018


- 5AB-E510-710

I have found the 5th Airborne exactly what I needed. The ride when pulling the 5th wheel has smoothed out and it makes pulling the trailer more enjoyable and less frightening for my wife. 482759

- 5AB-E510-710

Great hitch.I love it. 440449

- 5AB-E510-710

Mounted right up on the trailer 2006 Prowler , have not used it yet , looks like great quality hooked up to the pickup and the trailer was level usingthe same holes,I would of rated as a five but the air valve was damaged, and didn't look like it was in shipping that it happened, package that way,it's fixed and worse great 378093

- 5AB-E510-710

Worked perfectly. Installation was straight forward. This set up works well with our 30' with one slide rv. 369551

- 5AB-E510-710

Installed this in 10 minutes. Super Easy to install, you can do it by yourself if you're strong and have some skills. Having a helping hand doesn't hurt though. Although the custom bed isn't done on my truck, it's time for vacation. I used a new B&W turnover ball and companion 5th wheel hitch and connected my newly (easily) installed Airborn air bagged pin box.... rides like a dream!!!!! I shouldn't have used my other non-air ride pin box for 10 years! This pic shows my test run, usually the car is a boat. 209949

DarrenI see you have a flatbed installed on your truck. What issues did you have with height and length of bed? What brand bed and size of bed did you use? I will need to do the same thing to my f350. Tx. Dennis
-- comment by: Dennis C - 12/16/2015

Hi Dennis, This is a slightly unique emphasis on slightly truckbed combo. First of all its a 5500, not a 3500. 1 ton and smaller Ram, Ford, Chevy all have a 56 CA cab axle, the commercial versions 450
-- comment by: Daren - 12/18/2015


- 5AB-E510-710

The staff was fantastic,had a problem with the king pin box, shipped the wrong one first time but they shipped out the correct one the very next day received when she said it would be delivered. I have installed both products with no problems and will recommend to all my RV friends to use your company. 186464

- 5AB-E510-710

Was what it said it was Did more than expected Shipping was fast Staff was Great to work with 156472

- 5AB-E510-710

I have not used it but I just got installed on 8-27-14, I am looking forward to pulling my Camper with very litte worries of movement inside of my Camper, My Friend has one on his Camper and he is the reason I bought mine because of the diffence he said it made for him when he pulled his Camper. 149130

- 5AB-E510-710

I haven't used the air ride pin box yet, but I will be going on a trip this weekend. Installation was a breeze with the help of my son to place in position. It took about 45 min. to remove the old pin box and install the Airborne. Another 30 min. to secure the electrics and trailer emergency brake switch. 145985

- 5AB-E510-710



Ask the Experts about this Reese Fifth Wheel King Pin

  • 5th Airborne Pin Box Replacement for 2007 35 ft Challenger 5th Wheel
    Our part # 5AB-E510-710 is exactly the part number you are looking for. This is a cushioned 5th Airborne pin box designed to fit several common pin box styles like the: Fabex (500, 503, 765, and 770) Lippert (1716) RBW (7028)
    view full answer...
  • Air Spring Position Adjustment on 5th Airborne Air Ride Coupler Pin Box
    The 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E510-710 will need to have all weight off the pin box and the air bag deflated prior to adjustment. There is no reason why you would need to remove the core, according to the instructions. I've attached a photo of this page of the manual (also attached) to assist. If it won't move with the bolts loosened, I recommend prying between the two bolts side to side being careful not to bed the bolts and if needed between the outer...
    view full answer...
  • Replacement for RBW 7028 Pin Box to Reduce Chucking and Improve Ride Quality
    The perfect solution to replace your RBW 7028 pin box is the Reese 5th Airborne # 5AB-E510-710. It greatly reduces vertical shock that is caused by traditional rigid pin boxes, which means you'll encounter some 60% less chucking. It also protects your trailer by reducing the amount of vibration to the the frame, which is more than just an added bonus, it's a way to protect your investment. The 5th Airborne # 5AB-E510-710 is the most economical option to replace your RBW 7028 and it...
    view full answer...
  • Sidewinder Pin Box Recommendation for a Lippert 1716 Pin Box on Fifth Wheel Trailer
    I have a solution for you, but I can't recommend you install a pin box designed for a different pin box on your trailer that originally has a 1716 Lippert on it. Since you are looking for a longer pin box most likely you are looking for something to give you additional clearance for turning. Instead you would want the Sidewinder part # RP61410 that has been confirmed as a fit for your trailer and will move the pivot point of your trailer back 22 inches which will give you better clearance...
    view full answer...
  • Replacement Air Ride Pin Box for 5th Wheel Trailer with Damaged Lippert 1716 Pin Box
    The first thing I would do is have a reputable shop take a look at where the pin box mounts to the trailer and the frame above that which is covered by the trailer body because there could be unseen damage that could result in a failure down the road even if the pin box is replaced. Assuming that is all fine then going by the measurements is pretty much the definitive way to figure out which pin box will fit. If you have down the measurements and they match up to the Lippert 1716 then...
    view full answer...
  • How to Choose the Correct Sidewinder for Your Pin Box Without Using the Model Number
    It is possible to determine the correct sidewinder if you do not know the make and model of your pin box. You will need to take some measurements of the pin box width, horizontal distance, vertical distance, front row to king pin, rear row to king pin and bolt size. I have attached an image that shows where to take these measurements. I have also attached a document that explains the measurements and has a chart showing the measurements of certain pin boxes.
    view full answer...
  • Replacement 5th Wheel Pin Box to Provide More Turning Clearance
    5th wheel pin boxes do come in different lengths. In some cases substituting a longer pin box can provide more clearance but affect a trailer's frame warranty since extending a pin box increases the amount of leverage applied to the frame. We suggest checking with your trailer manufacturer (you'll need the trailer's VIN when you call) to get their take on the idea of changing out pin boxes on your particular trailer. The linked article on pin boxes may be helpful since it illustrates...
    view full answer...
  • Does Adding a Sidewinder Increase the Weight Carried by the Truck
    Yes, moving the trailer further from the hitch can increase the leverage applied to the hitch. However, with a Sidewinder only the pivot point of the trailer is moving not the actual trailer itself. The amount of weight that is at the hitch will be about the same. The way a Sidewinder works is it does not allow the trailer to pivot at the king pin in the hitch. It uses a wedge on the bottom of the Sidewinder arm that fits against the king pin and between the two sides of the funnel...
    view full answer...
  • How to Reduce Eliminate Fifth Wheel Trailer Chucking
    What you're referring to is called chucking, the unwanted fore and aft movement of the trailer. If the fifth wheel hitch you're using has a slide bar jaw or a two piece jaw that's worn and has lots of play in it, it would cause the chucking you're experiencing. Even though the king pin might be held by the hitch jaws so it's in no danger of popping out. If the jaws allow any play at all the king pin's rattling around in the hitch jaws will be transferred to the vehicle, which isn't very...
    view full answer...
  • Solution for Leaking 5th Airborne Pin Box
    If you can't find the leak on the bag anywhere most likely you have a slow leak coming out of the valve. What you'd need then is the # 58382 which will replace the fitting and valve.
    view full answer...
  • Original Pin Box Number For 2007 Keystone Challenger 32RKS
    There should be a sticker or plate on the pin box itself that lists the manufacturer and model of the pin box. If it is not present then there are some measurements you can take to determine the model of the pin box. I have included a link that explains these measurements for you. Once you know the pin box number, I would be happy to help you find a replacement.
    view full answer...
  • How to Measure to Determine the Model Name and Number of a Pin Box
    The number you gave me doesn't match any pin box models that I could find. But what you can do is check out the FAQ article I attached that shows you how to determine the pin box name and model number based on the dimensions of the pin box.
    view full answer...
  • Best Way to Reduce Fifth Wheel Towing Chucking
    The hitch you use will play a huge factor in how much chucking you will experience. If the hitch uses a slide bar type jaw which leaves a lot of room for movement you are going get more chucking. If you use a hitch with a very tight jaw system like the Reese Select Plus # RP30081 chucking would be greatly reduced. In nearly every situation of chucking we have seen the solution has been to go with a fifth wheel hitch that has less movement. Cushioned pin boxes like the one you referenced...
    view full answer...
  • Recommended Replacement Air Ride Pin Box for 2008 Jayco Eagle with Extended Pin Box
    Thank you for the measurements! I have a few options for your pin box replacement. The Leland 7920 is the closest to what you have and any pin box compatible as a replacement for it will also be compatible with your Dexter pin box. For the air ride replacement, you can use the Trailair Air Ride 5th Wheel King Pin # UF35-946208 made by Lippert or you can use the Reese 5th Airborne Premium Fifth Wheel Air-Ride Coupler # 5AB-E7920. Both of these are rated for up to 21,000 lbs, so they...
    view full answer...
  • Replacement Pin Box for 2008 Cameo 5th Wheel with 21K Fabex 765 Pin Box
    For your Fabex 765 pin box on your 2008 Cameo 5th wheel, I recommend the 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E510-710 or the Trailair Air Ride 5th Wheel King Pin # UF35-946212. These are the only 21K pin box replacements we have for your specific pin box and capacity and both of these have the really nice air ride feature for a smoother ride and reduced jarring and chucking. With any of our products if there are used products available they will be listed on the...
    view full answer...
  • What Should the Air Pressure be in a 5th Airborne Premium Fifth Wheel Air Ride Coupler
    You will want the air pressure in the air bag that is inside of the 5th Airborne pin b ox to be 80 to 100 psi to start. Do not exceed 120 psi. At 11.5 pounds per square inch the air bag would not be doing its job. You may have a leak somewhere. To determine if there is a leak and where you will need to pour some soapy water on the valves and the air bag itself. If it starts to bubble then you know there is a leak in that location. You could replace the lines using # 58382. The valve...
    view full answer...
  • Best Air-Ride Pin Box to Replace Stock Unit on 35-Foot 5th Wheel with 11,300-lb Dry Weight
    An air-ride pin box such as the 5th Airborne unit you referenced, part # 5AB-E510-710, will provide a substantial improvement in ride quality as compared to standard rigid pin boxes without an air bag and shock absorber. This will be especially true for a large trailer like yours. Replacement pin boxes must be chosen based on the part number of the existing pin box. This will ensure simple bolt-on installation of the replacement. The linked article includes a table with a pin box cross-reference...
    view full answer...
  • Which Reese 5th Airborne Pin Box Fits as Replacement for Lippert 1621 Pin Box
    I have exactly what you are looking for, but the part # 5AB-E510-710 does not fit as a replacement for a Lippert 1621 pin box. Instead the part number that does fit the Lippert 1621 is the part # 5AB-E1621-16K so that is what you would need.
    view full answer...
  • Can Reese Sidewinder be Used with a B and W Companion 5th Wheel Trailer Hitch on a 2012 Ford F-250
    Reese actually states not to use the Sidewinder with B and W 5th wheel trailer hitches, including the Companion hitch, because it will put to much stress on the hitch, which is not secured enough to handle the rotation at the locked-out head of the hitch. A slider hitch is going to be the way to go. The slider that fits the Ford prep package is the Reese Elite Series, # RP30144. But another option is to use the Reese Elite adapter, # RP30156, and a more economical hitch like # RP30075...
    view full answer...
  • Correct 5th Airborne and Sidewinder for Lippert Pin Box 1116
    If your truck bed is shorter than 6 feet, I recommend using a sidewinder. The 5th Airborne Premium Fifth Wheel Air Ride Coupler, # 5AB-E510-710, will not work with the Lippert 1116. There currently is not an extended pin box option for the Lippert 1116. The 5th Airborne and Sidewinder that will fit the Lippert 1116 pin box is the 5th Airborne with Sidewinder Premium Fifth Wheel Air-Ride Coupler for Short Bed Trucks, # RP61412. To figure out the clearance, there are some measurements...
    view full answer...
  • How to Determine the Make and Model of the OEM Pin Box on a 2004 Raptor Toy Hauler
    There are three ways to determine what pin box is on your 2004 Raptor toy hauler. The easiest way to determine which pin box you have is by looking on the pin box. There should be a sticker that gives the pin box manufacturers name and the model number. If you cannot find the sticker or it is not legible, another way to find the pin box information is to contact the trailer manufacturer directly. They can determine which OEM pin box was installed on your trailer using the trailers serial...
    view full answer...
  • Cushioned Pin Box Recommendation to Replace Fabex 500
    We have an air ride cushioned pin box to replace your Fabex 500 that will work great to smooth out your ride quality. For that you would want the 5th Airborne part # 5AB-E510-710 which is a confirmed fit.
    view full answer...
  • 5th Wheel Trailer Rides Too High at the Front when Towed with a 2014 Ram 2500 4x4
    Using a different pin box is not going to give up the amount of drop you are looking for at the front of your 5th wheel trailer. There are some things you can do to adjust the height of the trailer though. Most 5th wheel hitches and pin boxes are height adjustable. If you were to adjust the hitch down and the pin box up it will lower the front of the trailer. Remember that you need 5 or 6 inches between the tops of the bed sides and the bottom of the trailer overhang. If this adjustment...
    view full answer...
  • What is the Length of the 5th Airborne Premium Fifth Wheel Air Ride Coupler, # 5AB-E510-710
    I went out to the warehouse to measure a 5th Airborne Premium Fifth Wheel Air Ride Coupler, # 5AB-E510-710. From the back row of bolt holes to the center of the king pin measures 27-1/2 inches. The total overall length is 37 inches. You can compare these measurements to the pin box that is currently on the trailer. Since you have a short bed truck, you will benefit more from a Sidewinder that allows for more clearance than a slider 5th wheel trailer hitch. A round tube slider will travel...
    view full answer...
  • Experiencing A Lot of Chucking Towing a 5th Wheel Trailer with 5th Airborne Air Ride Pin BOx
    With a lighter pin weight off 2,000 pounds, you would first want to make sure the air spring is moved closer to the front of the pin box. As for the amount of air the 5th Airborne pin box # 5AB-E510-710 should be inflated to 80 to 100 psi to start, do a test run, and then determine if more air is needed not to exceed 120 psi. 5th Airborne actually states to try different air pressures first before adjust the air spring position. You should be able to find a more comfortable ride by trying...
    view full answer...
  • Comparing a 5th Airborne with Companion Hitch and a Reese Goose Box Adapter
    First, on the Goose Box, # RP94716-61301, for Lippert 1716 pin boxes it measures 17-3/4 inches from the center of the king pin to the center of the nearest row of bolt holes. And on the 5th Airborne pin box, # 5AB-E510-710, it measure 18-3/4 inches. The Goose Box is approved for use by Lippert for 5th wheel trailers that have a Lippert frame. It is an excellent option that won't require putting in and taking out a heavy 5th wheel hitch to switch from towing a 5th wheel trailer to a gooseneck...
    view full answer...
  • Choosing a 5th Airborne Sidewinder Pin Box for a Heartland Big Horn With Lippert Pin Box
    Selection of a replacement 5th Airbone Sidewinder pin box for your 5th wheel is best done by finding the current pin box's part number. The linked article includes a cross-reference table of Sidewinder compatibility that will allow you to check your current pin box number to see if there is a 5th Airborne Sidewinder that will fit in its place.
    view full answer...
  • How Long is the 5th Airborne Premium Fifth Wheel Air Ride Coupler, # 5AB-E510-710
    I went out to the warehouse to measure a 5th Airborne Premium Fifth Wheel Air Ride Coupler, # 5AB-E510-710. From the back row of bolt holes to the center of the king pin measures 27-1/2 inches. The total overall length is 37 inches. Since you have a short bed truck. You will probably benefit from a sidewinder that allows for more clearance than a slider. A round tube slider will, at max, extend back 12 inches. A sidewinder will provide 22 inches. We have sidewinders by themselves or with...
    view full answer...
  • Can a Sidewinder be Used with Pullrite SuperGlide Hitch in a 2016 Toyota Tundra with 5-1/2 Foot Bed
    A regular air ride pin box doesn't give you any additional clearance but a Sidewinder does. It will move the pivot point of the trailer back 22 inches so that it is always turning 22 inches back. The only problem is that a Sidewinder cannot be used with a SuperGlide hitch since that hitch slides automatically. If you can lock out the SuperGlide to keep it from sliding it could work but Reese still does not recommend it. So you could change the hitch but your SuperGlide is the standard...
    view full answer...
  • Troubleshooting Reese 5th Air Borne Pin Box Air Bag Mounting
    The Reese 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E510-710 you asked from is what I can only assume is what you are asking about. This pin box will have two bolts on the bottom that are tight to the air bag and yet designed to be guide pins and free moving to the bottom plate according to my tech contact at Reese. The air bag is held in place by the top two bolts that should be torqued to spec. I've attached a photo of the installation instructions to assist.
    view full answer...

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