Price: $665.57

5th Airborne Premium Fifth Wheel Air Ride Coupler - 16,000 lbs Capacity

Item # 5AB-E1621-16K

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Retail:$1,019.80

Our Price: $665.57

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reese fifth wheel king pin box upgrade reduces bounce and jarring 5ab-e1621-16k
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reese fifth wheel king pin reduces bounce and jarring lippert 5ab-e1621-16k
reese fifth wheel king pin box upgrade cushioned
reese fifth wheel king pin box upgrade reduces bounce and jarring 5th airborne premium air ride coupler - 16 000 lbs capacity
reese fifth wheel king pin box upgrade cushioned 5th airborne premium air ride coupler - 16 000 lbs capacity

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reese fifth wheel king pin box upgrade reduces bounce and jarring 5ab-e1621-16k
reese fifth wheel king pin box upgrade reduces bounce and jarring 5th airborne premium air ride coupler - 16 000 lbs capacity
reese fifth wheel king pin box upgrade reduces bounce and jarring 5ab-e1621-16k

  • 1621
  • Lippert
  • Reduces Bounce and Jarring
  • 16000 lbs GTW
  • Pin Box Upgrade
  • Reese
  • Cushioned
  • Fixed Turret
The 5th Airborne premium fifth wheel air-ride extended pin box 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-E1621-16K 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 - 16,000 lbs Capacity. Fifth Wheel King Pin reviews from real customers.



Reese Fifth Wheel King Pin - 5AB-E1621-16K

The 5th Airborne premium fifth wheel air-ride extended pin box 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.


Features:

  • 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
  • Pin box has built-in friction-sway control
  • Streamlined, aerodynamic design


Specs:

  • Capacity: 16,000 lbs; CSA approved
  • 3-Year limited warranty
  • Designed for use with the following pin boxes:
    • Lippert 1621 (15.5K Pin Box)



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


Fifth Airborne diagram

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





5AB-E1621-16K 5th Airborne Premium Fifth Wheel Air Ride Coupler - 16,000 lbs Capacity



5AB-E1621-16K Installation InstructionsInstallation Details 5AB-E1621-16K Installation instructions5AB-E1621-16K Installation InstructionsAlternate Instructions 5AB-E1621-16K Installation instructions



Economy - This item

5th Airborne Premium Fifth Wheel Air Ride Coupler - 16,000 lbs Capacity


5th Airborne Premium Fifth Wheel Air Ride Coupler - 16,000 lbs Capacity
Reese Fifth Wheel King Pin

45 reviews

Code: 5AB-E1621-16K


Retail:$1,019.80

Our Price: $665.57


  • Fifth Wheel King Pin
  • Pin Box Upgrade
  • Cushioned
  • 16000 lbs GTW
  • Reduces Bounce and Jarring
  • Fixed Turret
  • Lippert
  • 1621
  • Reese


The 5th Airborne premium fifth wheel air-ride extended pin box 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.

more information →
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Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs
Lippert Components Fifth Wheel King Pin

10 reviews

Code: LC328330


Retail:$638.06

Our Price: $474.92


  • 18000 lbs GTW
  • Lippert Components


This Rota-Flex pin box has a pivoting head with a built-in rubber compound that works to reduce chucking and absorb road shock, resulting in a smoother ride and less wear and tear on your trailer. Replaces Lippert 1621 pin boxes.

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Trailair Air Ride 5th Wheel Pin Box - Lippert 1621 - 21,000 lbs


Trailair Air Ride 5th Wheel Pin Box - Lippert 1621 - 21,000 lbs
Lippert Components Fifth Wheel King Pin

6 reviews

Code: LC158778


Retail:$929.95

Our Price: $799.90


  • 21000 lbs GTW
  • Lippert Components


Enjoy smooth, stable towing with your fifth-wheel trailer by replacing your ordinary pin box with this air-ride-equipped model. An internal air bag and built-in strut absorb road shock so that you won't feel it. Replaces Lippert 1621 pin boxes.

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5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret - 16,000 lbs


5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret - 16,000 lbs
Reese Fifth Wheel King Pin

6 reviews

Code: RP61422


Retail:$2,295.40

Our Price: $1,638.07


  • Provides Turning Clearance
  • Rotating Turret
  • Fabex
  • M and M
  • 663
  • 665
  • 0719
  • 1621HD
  • 663
  • 665


5th Airborne Sidewinder replaces your fifth-wheel trailer's king pin and alters the pivot point of your rig, enabling you to make up to 90-degree turns. Enclosed air spring in pin box absorbs shock and adjusts for a smooth ride.

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Video of 5th Airborne Premium Fifth Wheel Air Ride Coupler - 16,000 lbs Capacity


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




Video Transcript for Fifth Gear Fifth Wheel King Pin 5AB-E1621-16K Review

Today, were going to review part number 5AB-E1621-16K. This is the Reese 5th Airborne Premium Fifth Wheel Air Ride Coupler. The Air Ride Coupler will bolt on to the trailer using the existing holes on your trailer. The way it operates there is an Air Nipple on the side right here. Reese recommends to always carry 10 psi in the air bag inside. It's usually best when you first install it to air it up to 70 to 80 psi.

The 5th Airborne Coupler is designed with an adjustable air spring which can be adjusted by these bolts on top of it. You can adjust the air spring to go forward or backward, whatever is needed for your application. It does have a shock absorber on the inside. It will reduce longitudinal shock, otherwise known as chucking by nearly 60% and it will decrease vertical shock by up to 44%. The way this will operate is the plate right here that will go on to your Fifth Wheel Head.

It has a bolt, an anchor bolt right here, and this plate will flex up and down and use the air spring thats on the inside to cushion the right of your Fifth Wheel. This coupler does have a weight capacity of 16,000 pounds and it does come with a limited three-year warranty. And that should do it for part number 5AB-E1621-16K.


Customer Reviews

5th Airborne Premium Fifth Wheel Air Ride Coupler - 16,000 lbs Capacity - 5AB-E1621-16K

Average Customer Rating:  4.7 out of 5 stars   (45 Customer Reviews)

The 5th Airborne premium fifth wheel air-ride extended pin box 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-E1621-16K

by: Jim L.01/23/2014


This was ordered after 9pm on Monday and arrived Wednesday around 4pm from Missouri to South Carolina - amazing Its too cold to install right now so I'll wait for a little warmer weather. Four bolts doesn't look too hard even for a 74 year old. 114585


Comments

The fill tube for the air bag was bent and the unit wouldnt hold air. Call and the new tube arrived in two days. Installation was fast and simple. The ride matched my old camper with a fifth airborne sidewinder. Totally satisfied with the product and the rapid service.

Jim L - 01/23/2015

8854

- 5AB-E1621-16K

by: Calvin D04/01/2015


We just recently were able to take the 5th wheel out for a trip after installing the air ride coupler. Our ride was soooo much better, no more jerking in the cab and things bouncing round in the trailer. So glad that we made the purchase. 182180


Comments

Still love it! So glad that we purchased it.

Calvin D - 03/31/2016

17322

- 5AB-E1621-16K

by: Shannon C07/08/2013


I ordered it and had it within a week. Installed the very same day and boy was I suprised how well it worked. Every 5th wheel should have one. You do not know it is even back there. I recommend e-trailer for all your trailer needs. And also it was extremely easy to install, less than 30 minutes I was done. Awesome product. Thanks E-Trailer!!!!!! 88357


Comments

All I can say is that it is just as awesome now as it was when I first got it. Thanks E - Trailer!!!!!

Shannon C - 07/10/2014

5517

- 5AB-E1621-16K

by: Kevin E.09/01/2011


I bought this back in February and have put over 4,000 miles on my fiver since then. This is without a doubt the best purchase I've made for any camper. It takes out all of the jolts and back and forth chucking we used to get on the miserable concrete highways. The only thing we feel now are the bumps we go over . . at least an 80% improvement. Since I'm a retired senior citizen, I was staying in a campground in Texas and I had no help there to install it. I had the UPS Driver put it in the bed of my pickup when it arrived. I removed the Lippert pinbox, letting it drop to the ground. I easily picked up just the end of the 5th Airborne, slid it into and locked the hitch in my pickup bed. I then backed under the pinbox rails and slid the 5th Airborne up into place and held it with screwdrivers blades while I bolted it in place. Easy installation for me, but I can see it would have been even easier for two people. GREAT PRODUCT! 23340



- 5AB-E1621-16K

by: TERRY G.07/12/2015


ITEM WAS EASY TO INSTALL. TOOK LESS THAN 1 HR TO INSTALL WITH HAND TOOLS. JUST GOT BACK FROM 4200 MILE TRIP . INSTALLING COUPLER ON 2013 CYCLONE TOYHAULER 15500 LBS GVW .MADE RIDE LIKE DAY AND NIGHT DIFFERENCE . WENT FROM AZ TO ILL TO MINN AND BACK . I WOULD NOT PULL ANOTHER TRL WITHOUT THIS TYPE OF COUPLER AGAIN, GREAT PRODUCT. 211135


Comments

just got back from cal . still working great even on rough cal roads

TERRY G - 07/11/2016

19318

- 5AB-E1621-16K

by: james d01/18/2014


My hitch arrive much quicker than promised. Though I am 70 years old, I had no problem installing alone. I worked off the tailgate of my truck with a bottle jack and some blocks of wood. Thanks for the best price and great shipping. 114141


Comments

After a year and thousands of miles, I would not want to tow without it. The sweet spot for my 2007 cedar creek 34sats towed by 2500 dodge ram, is 85 lbs air.

james d - 01/18/2015

8717

- 5AB-E1621-16K

by: Ron M04/23/2015


After talking with at least 12 different campers that had this King Pin I decided to purchase one. I searched the web to find the best price and came across ETrailer which had the best price. I called and talked to Dana which was very helpful and I placed my order. The product arrived in 3 days and the packaging was terrific. I read the directions which were easy to follow and read some other reviews from people who had already installed theirs. Unable to find anyone to help me I ventured into installing it myself and was able to complete the project within an hour. It fit perfect without any modifications to my trailer or the King Pin. I have yet to tow my trailer but form all I have read and the easy installation I am sure I am going to enjoy a much smoother ride..I want to thank ETrailer and Dana in customer service. 187602



- 5AB-E1621-16K

by: Harris B06/11/2017


Air fill valve was damaged in shipment ( as mentioned in many reviews). Etrailer had mfg send a new one overnight. I suggest that you ship with the fill valve not installed, having the customer install it when attaching to 5th wheel. Mfg sticker specifies that the attaching bolts be torqued to 200 ft. Lbs. Had to rent a torque wrench to install, thanks to my nephew, he was able to to apply enough pressure to achieve that setting. Hard for an old retired person to exert that much force. Now the good stuff. We traveled from California to New York. By the time we got there, my back was in bad shape due to the severe chucking. Ordered the pin box to be delivered to one of our Campground stops. We're now half way home, and my back is not hurting at all. Chucking is gone, great product! 391998



- 5AB-E1621-16K

by: Dave k06/27/2017


I purchased this based on price and reviews I read. Definitely helps with the ride! Alot less bucking and chucking over dips and bridge crossings. I did have to do a bit of tinkering with air pressure in the bag and location of the bag to get the ride right. This is the reason I didn't give it 5 stars. Access to the lower air bag bolts are a pain to get at. Luckily I'm an auto technician and have a wide variety of tools to do it. I don't know how anyone would do this with a basic rachet without a flex head. If Reese ever redesigns this pin box they should add some access holes to the bottom for this adjustment. Only other issue is small.....the pin box interferes with my b&w release pin. Not a big deal, just have to put the lock pin in upside down. This box extends further past the pin 399696



- 5AB-E1621-16K

by: Russ I.09/18/2014


This Airborne Kingpin box works great! Our hitch location in second-hand truck seems located in less than ideal position. This resulted in lots of "bucking & chucking" but Air-ride has changed it to gentle float at worse. Great product at fair price! 151875



- 5AB-E1621-16K

by: Ron D.01/05/2017


The 5th wheel airborne king pin was straight forward to install. The product did help with the trailer chucking by absorbing some of the bounce. I did have a problem with the first time I used it with the bladder not holding air. Called customer service and had me test the inner air valve and it turned to be a bad valve, replaced it and it now works properly. I believe that the valve problem was caused by cold weather as it was 10 degrees below zero when we I tried to fill the bladder to leave on our trip to warmer weather. I am still trying to work on the amount of air to inflate the bladder to give the optimum ride. I recommend the product. 330248



- 5AB-E1621-16K

by: Joe S.08/27/2014


Ordered this pin box on a Saturday, received it here in California the following Friday. Installed it the next morning with a helper. Took us about 45 minutes. We test drove it on some known crappy roads and it made a big difference. Afterwards I realized that the air bag was still in the rear position from the factory (set for a 3K lb. pin weight). My pin weight is 2K. I repositioned it forward and retested it. Most of the chucking is gone using this pin box but I still have some vertical bounce. I need to take it on a long trip and fine tune the air bag position and PSI. Overall I’m glad I bought it. 148928



- 5AB-E1621-16K

by: Tim L.11/26/2013


After installing coupler on my camper I put 90lbs of air in it and the next day hooked it up to my truck and the coupler had no air in it. I found it had an air leak at the fitting on the bottom of the air bag which to come to find out it was only finger tight. After removing air bag and re-installing the fitting as well as re-installing air bag, problem fixed. Coupler seems to work just fine as described but I need some more miles on it, but I think it will be OK. Just a thought, prior to installing coupler add some air and check for leaks in order to save you some work or a replacement. 108573



- 5AB-E1621-16K

by: djmc11/19/2016


I had a Fabex 5th airborne hitch pin on my other 5th wheel and was very pleased. Bought new 5th wheel and put on Reese 5th airborne hitch pin expecting the same performance, but the Reese does not perform as well as the old one. I have tried different air pressure and different air bag positions but cannot not find the smoothness I had with the old one. Also, I have had to touch up paint because of rust causing the paint to chip and come loose in certain areas. Just wish I could give it a better review. 318043



- 5AB-E1621-16K

by: George B.03/06/2015


Product arrived in just a few days. Air valve was damaged in shipment. Called etrailer and a replacement was shipped but have not received it as of today which is Friday. Guess it will be next week before I receive it. I was assured that it can be easily replace by me. Hope so. Good thing I don't need to pull my rig anytime in the next few days. I thought they were overnighting the part but apparently not. At this point, not too pleased overall. 177196



- 5AB-E1621-16K

by: William02/17/2013


I just installed my new pinbox it was an easy install. When completed I took my 5th wheel for a short trip to where I store it and it appears to work just as promised! Thank you! P.S. your customer service was excellent Thank you again! 66655


Comments

Finally went on long trip to give my 5th Airborne pinbox a workout. The ride was very good and I felt I had more control of truck! I would recommend this unit to anyone that is having a ride issue.ThanksWilliam

-- comment by: William - 06/23/2013

1676

Thanks a bunch for the update William. We are happy to hear that the pinbox is doing its job.

-- Patrick B - 6/24/2013


- 5AB-E1621-16K

by: Rich R04/23/2014


Different than previous fifth airborne. Just took a short spin but feels good. It requires more air pressure on this newer fiver though it has 700# lower weight than previous. Seems to be more active going and stopping than previous model. Time will tell. May it be as good as the last one. Five years of flawless service. That is why went for another. 127023



- 5AB-E1621-16K

by: Robert Williams.12/28/2012


This is not a product review as I have not installed the pinbox/ this is for etrailer. they went beyond my wildest dreams. I received this 2 days after Christmas, ordered P.M. on 21 Dec. Shipped that day...in my wildest drean I had not expected, for free shipping, to receive this till next week. It is wailting for me to return home 62194



- 5AB-E1621-16K

by: Justin P.02/02/2015


I hope this will be a great product. Fast shipping, great buy! etrailer took great care of me and my purchases. I've started buying from them and they have now earned all my business for any product I need and they sell. You can't go wrong with buying from them. There knowledge and customer service are excellent 172102



- 5AB-E1621-16K

by: Sean L.06/22/2016


Money well spent!!! Had it for over a year, still very happy. Towing much more comfortable. The only issue was the fill tube was damaged in shipping. Received a replacement but that one was damaged also. No fault to the seller, the item was not protected from damage by the packaging. Very pleased with the product! 263771



- 5AB-E1621-16K

by: Larry L08/27/2017


This pin box made a tremendous difference in my fifth wheel trailer. With the original pin box, the trailer controlled the truck and now it is the other way around. Now instead of huge jerks on rough roads, I get cushioned bumps. I can look in the rear view mirror and see the pin box absorbing the bumps. 425634



- 5AB-E1621-16K

by: Dave S.04/09/2017


The Reese 5th Airborne pin box made the ride so much smoother then al the chucking me bouncing I had before. The order arrived quickly and was easy to install. Minor damage to the air stem in shipping that was no fault of etrailer, but was able to air up the bladder. Great investment for a smoother ride. 364903



- 5AB-E1621-16K

by: James A05/26/2011


The king pin box arrived yesterday in great condition. Price was great and the service so far is wonderful. It will be a month or so before I use it so the review will have to wait. I plan to use your company to purchase a hitch and electric brake controller in the near future. Thanks again James 15443



- 5AB-E1621-16K

by: Ray D11/20/2013


Great product these air ride couplers should be on all new 5thers. But that aside your girls helped me select the right air ride coupler , no other company has the same great staff that really knows what they are selling and eager to help. Thank you, Ray in Florida 107935



- 5AB-E1621-16K

by: John G08/22/2011


This thing is amazing. Delivered in a few days and installed in minutes, my fifth wheel ride/handeling is so much improved that we've decided not to trade. The add boasted a 60% ride improvement, we think we're seeing 80%. We couldn't be more satisfied. 22518



- 5AB-E1621-16K

by: Marie W.09/05/2016


I bought the Reese fifth wheel king pin for a upgrade to the factory one. It was easy to install. What a big difference it made. After some adjustments, as per the instructions, no more chugging or very little. Now enjoy traveling with the Fifth wheel. 291401



- 5AB-E1621-16K

by: David03/06/2013


i just got home from our first trip after installing the 5th airborne pin box. it made the ride MUCH better, even the really terrible roads were better. i should have done this when i first got my 5th wheel. i installed it myself, it was easy. 69225



- 5AB-E1621-16K

by: Bill S09/25/2016


This Reese Air king pin has made a different over my rigid pin. I believe it does just what it was advertise to do. Ride is more soft and controlled. I like it and would recommend it to any one. For the cost it is a good choice. 299671



- 5AB-E1621-16K

by: Mike F.02/15/2017


Read several reviews and decided to go with the Reese airborne. Have purchased from etrailer before and always had great service. Pin arrived in a week and the price was better than any place else. 342280



- 5AB-E1621-16K

by: Butch Warner08/19/2015


Product came in two days! I don't know how they did it. I am looking forward to installing it. A road tip is coming soon and this will make my 5th wheeler a breeze to pull. 220408



- 5AB-E1621-16K

by: Bill K08/14/2015


Great Service, They answered all my questions and made my decision easy. Ordered it Thursday night and received it in NJ the following Thursday. It doesn't get much better. 219179



- 5AB-E1621-16K

by: Tony V.03/08/2012


Received on Monday and my RV mechanic installed today. Said anything that is Reese is a great product. Will use on a trip within the next few days. I know it will be great. 33379



- 5AB-E1621-16K

by: tommt w07/20/2012


got on wed afternoon put on thu morning about 30 min it was easy wish there was more info on takeing care it will know about how the ride is 3to4 weeks ps order and was great 48666



- 5AB-E1621-16K

by: Marcel B05/24/2012


Excellent Customer Service and delivery time. Product was packaged very well. I will definitely purchase from e-trailer again as the need arises. Thanks for all your help 41587



- 5AB-E1621-16K

by: NS03/08/2017


Made an incredible improvement to the ride. The trailer rode very rough and had tremendous bouncing on the truck prior to installing the pin box. Money well spent! 349930



- 5AB-E1621-16K

by: Dean05/20/2015


Fast shipping, when I got the hitch the air line had some damage and the sent a new one, the service was great, a d the install was quick and easy. 194530



- 5AB-E1621-16K

by: Rick G11/18/2012


When called to the place where work on my trailer they said the shipment was OK. They opened the package and just looked at it. Thank you Rick Green 59651



- 5AB-E1621-16K

by: James G03/22/2011


The product is excellent, the shipping was excellent and the price was unbeatable! You can bet that I will always check etrailer for my RV needs. 10118



- 5AB-E1621-16K

by: Malcolm H12/06/2016


Product work OK but the paint is peeling off in chunks on the plate that contacts the hitch surface and it's rusting badly. 322554



- 5AB-E1621-16K

by: Mh08/31/2017


Provides superior ride. No more chucking. Only problem is it leaks air some. Have to recharge after camping a week. 427343



- 5AB-E1621-16K

by: Bill McAfee07/16/2012


Better than I thought. My son in law and I had the old king pin off and the 5th Airborne on in half an hour. 48194



- 5AB-E1621-16K

by: Dennis F.06/18/2016


ride good easy to install with right tools paint pealing off in large hunks Reese logo's upside down 262436



- 5AB-E1621-16K

by: jodys auto inc.06/23/2014


Love it don't eel jolts and bucking an more very easy to install.received it in 3 days 137104



- 5AB-E1621-16K

by: Mila swearingin08/19/2016


Regretfully we sold the trailer and never got to use itc 285650



- 5AB-E1621-16K

by: jarred g06/09/2013


great product !.Much better ride and ha ndling! 83907


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Ask the Experts about this Reese Fifth Wheel King Pin
Do you have a question about this Fifth Wheel King Pin?


  • Best Fifth Wheel Pin Box Replacement Recommendation for a Lippert 1621 Pin Box
  • If you are looking for the best fifth wheel pin box to replace your Lippert 1621 that will provide the smoothest ride quality and won't break the bank I would recommend the new Trail Air Flex Air part # LC328492. This pin box works to fight and prevent vertical and horizontal chucking to provide you with a very smooth ride quality. I attached a demo video for more info. Since you have a short bed truck I believe the best option would be a Sidewinder Pin Box with a 5th Airborne Air Ride...
    view full answer...

  • Replacement Air Valve For 5th Airborne Premium Fifth Wheel Coupler
  • If you need to replace the valve or repair a broken air line on your 5th Airborne Premium Fifth Wheel Air Ride Coupler, part # 5AB-E1621-16K, we have a repair kit designed to do the job. I recommend the Fifth Gear Easy Fill Retro Fill Kit, part # 58382. This is designed to fit both the 5AB-S and 5AB-E Pin Boxes, and provide easier access to the inflation valve.
    view full answer...

  • What is Correct Air Pressure for 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E1621-16K
  • The 5th Airborne Premium Fifth Wheel Air Ride Coupler, part # 5AB-E1621-16K, is a direct replacement pin box for the Lippert 1621 and is rated for king pin weights up to 4200-lbs. Air spring pressure can be adjusted between 80 psi and the maximum of 120 psi to achieve the smoothest ride. Add air if the ride is too soft; remove air if the ride is too stiff. A good starting point is about 90 psi. For reference I have linked the installation instructions for this pin box. I have also linked...
    view full answer...

  • Replacement Air Ride Pin Box Recommendation for a Lippert 1716 Pin Box on 2013 Sandpiper 365
  • For a replacement air ride pin box that will replace a Lippert 1716 you will want the 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E510-710. This pin box will use an air bag and a shock absorber to reduce bouncing and chucking, This pin box will go a long way toward making towing a more comfortable and pleasant experience. To see a FAQ article with more information about the 5th Airborne Pin Box, click the provided link.
    view full answer...

  • Fifth Airborne Replacement Pin Box for Mor-Ryde 1621
  • Other than the heavier duty spring/shock absorber in part # 5AB-E1621-610 which increases the weight capacity, part # 5AB-E1621-610 will bolt up to the Fabex 665,Lippert 1621 and 1621HD and the M&M 665. Part # 5AB-E1621-16K bolts up to the Lippert 1621 only.
    view full answer...

  • Maximum Pin Weight On Fifth Gear Fifth Wheel King Pin, # 5AB-E1621-16K
  • The pin weight on the Fifth Gear 5th Airborne King Pins will match the pin weight on the factory Lippert 1621 pin box. You will need to purchase the 5th Airborne King Pin by the total weight of your trailer and its contents. If the weight of your trailer and the contents in it is less than 16,000 lbs then you could use the Fifth Gear Fifth Wheel King Pin, # 5AB-E1621-16K, it will fit in place of the Lippert 1621 pin box, and the weight capacity is 16,000 lbs. If the weight and...
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  • Best Aftermarket Pin Box Recommendations for Lippert 1621 Pin Box Replacement
  • First, Trailair is the manufacturer. We get them from Lippert. They are similar setups. Both the 5th Airborne and the Trailair king pins have an airbag and shock. The main difference is the position of these components in the unit. The Trailair units have the shock and airbag more at the front which seems to provide better cushioning against road shock, vertical and horizontal shock and chucking. Either unit will provide an increase in ride quality and reduce the stress on the on the...
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  • Differences Between 5th Airborne Fifth Wheel Air Ride Couplers # 5AB-E1621-16K and # 5AB-E1621-610
  • I spoke with my contact at 5th Airborne about Fifth Wheel Air Ride Coupler, # 5AB-E1621-16K and # 5AB-E1621-610. he stated that they have the same air bag and shock. The difference is that the 21k capacity version, # 5AB-E1621-610, is constructed to be able to handle the higher capacity. For your trailer, the 16k, # 5AB-E1621-16K, would work well. I have included a link to installation details for you to view.
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  • Identifying an Unknown Fifth Wheel Pin Box
  • Somewhere on the pin box there should be a sticker or a metal plate that lists the part number. If could be located on the top, bottom or side of the pin box. If the sticker or plate has been removed, we can determine the model number of the pin box according to the bolt hole spacing, as shown in the FAQ article I have linked you to. So, if you cannot find the model number, simply follow the directions on the FAQ article and provide me the measurements, and I would be glad to recommend...
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  • 5th Airborne Recommendation for a Lippert 1621HD Pin Box
  • The difference between the 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E1621-610 and the 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E1621-16K is the weight capacity and a different bolt pattern. You would want the # 5AB-E1621-610 since your pin box is a 1621HD. The # 5AB-E1621-16K is only designed to work with the 1621 pin box so I would not recommend it for you.
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  • Recommendations to Reduce Chucking with a 5th Wheel Towing Setup that Uses Husky 5th Wheel
  • What you are describing is called, "chucking." This is a pretty common problem with fifth wheel hitches. The sound and feeling you are experiencing is actually from the play that is between the jaws of the hitch and the king pin of your trailer. Some hitches just happen to have more play, which causes the chucking, than others that fit tighter. The only real solutions are to upgrade to a hitch that is cushioned and has a jaw system that provides better king pin contact to reduce movement...
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  • How to Determine the Proper Air Ride Pin Box for a 5th Wheel Trailer
  • Using an air ride pin box with the Timbren springs should not be an issue. The air ride pin box is going to reduce the chucking (back and forth shock) and some of the vertical up and down movement. The Timbren springs will help stability with the truck and keep body roll to a minimum so using both should not be an issue. Since you are not sure which pin box you have you will need to take some measurements using the help article I have linked. If you have a Lippert 1621 pin box then your...
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  • Replacement Pin Box to Reduce Bouncing of 14K Big Horn 5th Wheel
  • I am not aware of any industry specs on the maximum allowable flex. You might direct that question to the manufacturer of your fifth wheel. The exact replacement pin box you need would depend on the model number of your Lippert pin box, as there are several different model numbers with # 1621 being the most common. There should be a sticker or plate somewhere on the pin box that will list the model number. Since you are concerned about the bouncing, the Ultra-Fab TrailAir like part...
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  • Which 5th Airborne King Pin Will Fit A Forest River Wildcat 29 RLBS With Lippert Pin Box
  • I called Lippert Components and they said the pin box model you have is the Lippert 1621. The 5th Airborne Premium Fifth Wheel Air Ride Coupler 16K, part # 5AB-E1621-16K, would be the correct 5th Airborne king pin for your Forest River Wildcat 29 RLBS if it weighs less than 16,000 lbs. This 5th Airborne king pin has a 16,000 lbs. weight capacity. If you are needing a larger 5th Airborne you can use the 5th Airborne Premium Fifth Wheel Air Ride Coupler 21K, part # 5AB-E1621-610. This...
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  • Sidewinder Recommendation to Replace a Lippert 1716 Pin Box
  • I did some research on the pin box you have and it looks like you will need a Sidewinder part # RP61410. This is confirmed to fit on the Lippert 1716 pin box that would have been on your trailer prior to the Mor Ryde being installed on it. I attached a review video and an FAQ on Sidewinders for you to check out also.
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  • What 5th Airborne Coupler Will Fit A 12,000 Lbs. Coachmen Fifth Wheel With A Lippert 1621 Pin Box
  • Both the 5th Airborne Premium Fifth Wheel Air Ride Coupler - 16K, part # 5AB-E1621-16K, and the 5th Airborne Premium Fifth Wheel Air Ride Coupler - 21K, part # 5AB-E1621-610, are for extended pin boxes and will fit the Lippert 1621 pin box. The 21K 5th Airborne coupler will also fit the Lippert 1621HD pin box. Both of the couplers have the same front row to king pin length of 17-3/4 inches. The 21K 5th Airborne coupler is rated for 21,000 lbs. so the airbags and shocks are designed...
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  • Replacement Upgraded Pin Boxes for a Lippert 1621 Pin Box
  • Trailair Flex Air 5th Wheel Pin Box # LC328484 is actually not the correct model to replace the Lippert 1621 pin box. Instead it fits the Lippert 0719 pin box so it will not work with your trailer. For your 1621 pin box there are more options: # LC328492 rated for 18,000 pounds # 5AB-E1621-610 rated for 21,000 pounds # 5AB-E1621-16K rated for 16,000 pounds # LC158778 rated for 21,000 pounds # LC328330 rated for 18,000 pounds # LC328329 rated for 21,000 pounds # DM8250008 rated...
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  • Sidewinder Pin Box Replacement Recommendation to Replace a Mor/Ryde SPB72-1621LD
  • Based on the part number you gave for your Mor/Ryde pin box it sounds like you have a pin box based on the Lippert 1621 pin box. Which then for the correct Sidewinder you would want the part # RP61420.
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  • 5th Airborne Air Ride Pin Box to Replace an RBW 7016 Pin Box
  • There is a 5th Airborne Premium Fifth Wheel Air Ride Coupler designed for the RBW 7016 pin box. It is # 5AB-T7016. This is an air ride pin box but not a Sidewinder. There are no Sidewinders that will fit the RBW tube style pin boxes. I have linked a help article on 5th Airborne pin boxes for you.
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  • 5th Airborne Air Ride Coupler Recommendation for a 2002 Alfa Sun w/ RBW 7016 Pin Box.
  • I did some research and I could not find any information on a RBW 7016 pin box. Everything I saw said that there was only a RBW 7016-2P. Since RBW is no longer in business I was not able to contact them and here directly from the horse's mouth. There is a way for you to determine if you do have a -2P though. You will need to take a few measurements on your pin box and we will know for sure what you have. Check out the picture I attached. Your 2a measurement should be 7-1/4 inches,...
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  • Recommended Sidewinder King Pin for 2013 Heartland Sundance Fifth Wheel with Lippert 1621 Pin Box
  • If you are needing more clearance between the rear of the cab and the front of your fifth wheel, you would need a Sidewinder. We have four different Sidewinder models that are compatible with the Lippert 1621 pin box. If you need a 16,000 lb capacity, the Sidewinder is part # RP61420. If you would like the extra clearance plus the cushioning provided by the air ride system you mentioned, go with part # RP61422. For a 19,000 lb capacity, the Sidewinder is part # RP61421. If you...
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  • Clearance Issues With A 5th Wheel Sliding Hitch On A Short Bed Truck
  • I am very sorry to hear about the mishap you have encountered. I do have a few solutions that will allow for 5th wheel towing on a short bed truck however, you will need to consider the use of an auto-sliding hitch or sidewinder king pin. I can assure you that you will not run into this problem again with my recommendations in addition to providing a much more cost effective option than the body damage that will occur from contacting the cab of your truck with the trailer. A sliding...
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  • Under-bed Fifth Wheel Hitch Install Kit and Sidewinder Recommendations for a 2007 Ram 3500 Short Bed
  • You are correct that the Reese Under-Bed Rail installation kit # RP30074 is confirmed as a fit for your truck. I have included an installation video of this Under-Bed Rail system installed on truck very similar to your. Since you do have a short bed truck, you will need either a sliding hitch or a Sidewinder for sharp cornering and maneuvering. I have included some informational articles about both sliding 5th wheel hitches and sidewinders for your reference. It would work great...
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  • Air Ride Coupler for a 2006 WILDCAT 24RL 5th Wheel Trailer with a Lippert 1621 Pin Box
  • For the Lippert 1621 pin box (not the 1621HD) you can use the 5th Airborne Premium Fifth Wheel Air Ride Coupler, # 5AB-E1621-16K, that you have referenced. It has a 16,000 pound capacity as well. The air bag and shock inside with reduce chucking by as much as 60 percent and vertical sock by as much as 40 percent. If your Lippert pin box is a 1621HD model, use # 5AB-E1621-610. I have included a link to some installation details for you.
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  • 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.
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  • Instructions / Fasteners for 5th Airborne Premium Fifth Wheel Air Ride Coupler, Part # 5AB-E1621-16K
  • The 5th Airborne Premium Fifth Wheel Air Ride Coupler, Part # 5AB-E1621-16K, is not supplied with hardware. The manufacturer intends users to separately purchase new replacement hardware of the same size and grade as used on the original pin box. I have included a link to the instruction manual; please note this manual is generic and covers a number of different coupler products in addition to the # 5AB-E1621-16K. Installation is covered on pages 2 and 3, including torque specifications...
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  • How to Replace Air Fill Line On Fifth Airborne Air Ride Coupler Part # 5AB-E1621-16K
  • I spoke with one of my contacts at Cequent Towing Products, the manufacturer of the 5th Airborne Air Ride Coupler. I was told that once the air bag and the shock is disconnected and the axle or pivot shaft is removed, you should be able to slide the bottom pin plate forward, allowing access to the air line. It sounds as if you almost have it, just disconnect the shock.
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  • Replacement Pin Box Options for a Lippert 1621 Pin Box
  • It is permissible to use a slightly longer pin box than the stock one that came on the trailer. So if your trailer has a Lippert 1621 pin box you can use # LC158778. The 21,000 pound capacity of this unit is a bit overkill and there are other options that will fit including: Flex Air # LC328492 rated for 18,000 pounds 5th Airborne # 5AB-E1621-16K rated for 16,000 pounds 5th Airborne # 5AB-E1621-610 rated for 21,000 pounds Rota-Flex # LC328329 rated for 21,000 pounds Rota-Flex # LC328330...
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  • Recommendation for Reducing Chucking While Towing 15,000 Pound 5th Wheel Trailer with 2015 Silverado
  • Upgrading your trailer king pin to an air ride coupler can indeed reduce bounce and jarring while towing your 5th wheel camper. For your 15,000 pound camper, the Reese 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E1621-16K with a 16,000 pound capacity will work well. This pin box is designed to cushion shock with an adjustable air spring and shock absorber. Chucking can be reduced by nearly 60 percent, and vertical shock can be reduced by 44 percent. I've attached a review...
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  • Availability of Replacement 5th Airborne Air-Ride Pin Box for Venture CJ20517 Pin Box
  • We do have a confirmed fit for an Ultra-Fab Trailair Air Ride 5th Wheel King Pin to replace your Venture. The part # UF35-946211 is a direct bolt-on replacement rated to 21,000-lbs. Please note that this unit is not compatible with any type of goose neck adapter. However, currently we do not show a direct bolt-on 5th Airborne Air-Ride pin box to replace the Venture CJ20517 unit that is on your 5th wheel. I checked with my technical contact at 5th Airborne and he confirmed that they too...
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Info for this part was:

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