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  1. Fifth Wheel King Pin
  2. Reese
  3. 16000 lbs GTW
  4. Absorbs Road Shock and Reduces Chucking
  5. Provides Turning Clearance
  6. Upgraded Pin Box
5th Airborne Premium 5th Wheel Air Ride King Pin with Sidewinder - No Turret - 16,000 lbs

5th Airborne Premium 5th Wheel Air Ride King Pin with Sidewinder - No Turret - 16,000 lbs

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Retail:$2,658.00
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Fifth Wheel King Pin
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Shipping Weight: 135 lbs
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5AS16K - 16000 lbs GTW Reese Fifth Wheel King Pin
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Connect the turret portion (sold separately) of the sidewinder to this arm assembly to create a complete 5th Airborne sidewinder, which will enable you to easily make up to 90-degree turns. The built-in air bag both cushions and supports your load. 1-800-940-8924 to order Reese fifth wheel king pin part number 5AS16K or order online at etrailer.com. Free expert support on all Reese products. Guaranteed Lowest Price and Fastest Shipping for 5th Airborne Premium 5th Wheel Air Ride King Pin with Sidewinder - No Turret - 16,000 lbs. Fifth Wheel King Pin reviews from real customers.
  • All Info
  • Reviews (91)
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  • Why etrailer?

Reese Fifth Wheel King Pin

  • 16000 lbs GTW
  • Absorbs Road Shock and Reduces Chucking
  • Provides Turning Clearance
  • Reese
  • Upgraded Pin Box
  • No Turret

Connect the turret portion (sold separately) of the sidewinder to this arm assembly to create a complete 5th Airborne sidewinder, which will enable you to easily make up to 90-degree turns. The built-in air bag both cushions and supports your load.


Features:

  • 5th-Wheel trailer's pivot point is moved an extra 22" toward the rear of your tow vehicle so that you can easily make 90-degree turns, even with a short-bed pickup truck
    • Rotating turret (ST100, ST200, ST300, ST400 or ST500 - sold separately) required
    • No need to get out of your truck, throw a switch, push a button or mount a 5th-wheel slider
    • Trailer tracks more closely to the truck for better driveability
  • Fully enclosed, custom-tuned air spring in air ride trailer coupler - cushions and absorbs shock
    • Reduces longitudinal shock (chucking) by nearly 60 percent
    • Decreases vertical shock by 44 percent
    • Relieves stress on coach frame
    • Reduces vibration inside coach, protecting its contents
  • Air bag can be repositioned with 2 easy-to-access screws to better support varying loads
    • Move forward for light tongue weights
    • Move backward for heavy tongue weights
  • King pin connects to standard 5th-wheel trailer hitch and allows easy hookup and disconnect at any angle
  • 1-Piece, streamlined construction
  • C-Channel design of sidewinder provides more stability and strength than standard pin box
    • Able to support heavier loads


Specs:

  • Capacity: 16,000 lbs
  • Clearance: see formula below to ensure proper clearance
  • 3-Year limited warranty


Clearance Formula

Use the formula below to ensure that there will be enough space between your truck cab and trailer when you are executing a 90-degree turn with the 5th Airborne sidewinder installed.


(A + B) - C = Clearance

A = Distance from center of 5th-wheel hitch jaw to truck cab in inches

B = Length of sidewinder arm in inches (22")

C = Width of trailer in inches divided by 2


For example:

If you are using the 16,000-lb 5th Airborne sidewinder, then B = 22"

If the distance from the center of your hitch to your truck's cab is 36", then A = 36"

And, if your fifth-wheel trailer is 102" wide, then C = 51"

102/2 = 51

Therefore,

(36 + 22) - 51 = 7" of clearance

Reese Elite Airborne Sidewinder



5AS16K Fifth Airborne Sidewinder Arm Assembly without Turret

Item # 5AS16K

Installation Details 5AS16K Installation instructions


California residents: click here



Customer Reviews

5th Airborne Premium 5th Wheel Air Ride King Pin with Sidewinder - No Turret - 16,000 lbs - 5AS16K

Average Customer Rating:  4.5 out of 5 stars   (91 Customer Reviews)

Connect the turret portion (sold separately) of the sidewinder to this arm assembly to create a complete 5th Airborne sidewinder, which will enable you to easily make up to 90-degree turns. The built-in air bag both cushions and supports your load.

by:

I've had my Elite Airborne Sidewinder for about 6 months now. it's mounted on a 33 ft Jayco and pulled by a 2016 F-150 Lariat with a 5.5 ft box and the Max tow package. Total trailer weight is about 7800 lbs empty and closer to 9-9500 when we are loaded. We have done several short trips (under 200 miles) and one longer one so far from Montreal to Charleston, SC.

I'm nothing short of blown away by this coupler. There is no chucking, and it pulls so smooth you'd hardly think there was a trailer back there. Even my wife has commented that it hardly feels like we're towing. The sidewinder allows 90 degree turns easily and I can back it down a 80 ft driveway easily. I check the air once in a while in the air ride and have yet to check the key but I can back on to it easily. This coupler does exactly what it was advertised to do, and does it extremely well. We've had it out 6 times this year already and have a few more in mind before calling it a season. My thanks to Reese for an amazing coupler and to Pat and etrailer for their help in getting it to me so fast! Great customer service!




by:

I love the Air Ride King Pin with Sidewinder. The air cushion has removed the lag when taking off and stopping as well as smoothing out the trailer movement on rough road. The solid construction has served me well on our recent 2000-mile road trip.

I tow a 12,000 lb fifth wheel with a short bed 3/4 ton truck.




by:

The pin box greatly increases the maneuverability of the trailer / truck combination by moving the pivot point back under the front of the trailer rather than in the middle of the hitch in the truck bed. Additionally, the air ride greatly smooths the bumps out on the road and reduces chucking when braking or accelerating. The only reason for not giving 5 stars is that you MUST be perfectly aligned with the pin box in order to attach it to the hitch. Unlike a traditional king pin, this one is modified to have a large steel plate behind it to force the pin box to pivot under the trailer. This means you MUST be perfectly aligned with the pin box to get it to connect to the trailer. Normally, this is not an issue if you are able to back or pull the trailer to the point where the pin box is straight with respect to the trailer. however, often spots require backing in but are not deep enough to straighten the pin box to the trailer. This means that the truck must be backed in at what ever angle the pin box is at to get it to engage in the hitch.




by:

Got the box in time for my last trip of about 400 mi. Round trip.
I am replacing a plain sidewinder which is a great improvement over a sliding hitch- mainly because I am able to remove my Reese titan hitch myself without hurting my back. My last hitch slid automatically but weighted a ton.
The box had come open when it arrived, it appears that the packing staples had pulled out. I installed it myself without a great degree if difficulty and discovered the top wear ring was not included. Luckily I had the one from my regular sidewinder.
Don't know if I did it or it happened in shipping but the air valve was mashed on the end. I struggled getting the cap off and had to file it back round again to get an air nozzle on it. It is very soft brass and probably should be protected better for shipping and handling since it is easily damaged.
I was very disappointed in the performance. I drove a road with expansion joints and wished I had the plain sidewinder back on.
After I got home I moved the airbag and adjusted the air pressure in an attempt to smooth the ride. I haven't given it a fair trial yet with the new adjustments.
Sure seems like a lot of money for no significant improvement at this point.




by:

Reese Sidewinder RV hitch for short bed tow vehicles . This model has air bag suspension (replaced the non air suspension model)
Yes this product works good the ride is much less harsh, although the air suspension model is much higher and I did need to lower the fifth wheel hitch to get the trailer front lowered to a safer tow mode . There was initial damage from shipping (the air filling valve stem is installed when shipping and sticks out if and pokes Out of the box and was bent) Spoke to Reese and they took care in suppling a new valve and connections.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


I would have left 5 stars, but the package arrived just about destroyed and the pin box was significantly scratched and the air valve was bent and had to be replaced which I did myself. I had to touch up the paint on the frame of my trailer from the old pin box, so i also touched up all the scratches from shipping.
The hitch is absolutely awesome and was exactly what I was looking for to absorb some road shock! Just got back from a 1,700 mile trip and although it took some experimenting along the way to get it just right, it was worth it. Probably going to add a compressor and wireless valve to control the pressure in the cab because weight and air temps require different psi's. When we left Chicago it was 30° and by the time we got to southern Arkansas, it was 75° and had to let the air out 3 times. On our way back, had to add air multiple times.


Comments
I will have our Customer Service team reach out to you. You have already done what I would have suggested which would be to touch up the affected areas with a rust resistant paint.
-- Etrailer Expert Jenny N - 04/19/2022


by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


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.


Comments
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

Comments
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



by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


I really like my new King Pin with airbag and sidewinder and turret. I am not the greatest at backing up but I feel I have better control due to the geometry change. It is much easier to make sharp 90 degree turns. I hated to have to stop and move the slider. I have had to reset the four bolts on top of the turret and the two bolts holding the wedge to 150 pounds. I use a white lithium spray to ensure an easier connection. I am still trying to figure out what pressure I should set the airbag though. I have it set between 60 and 65. The ride is very smooth with very little chucking.


Comments
I absolutely love this turreted kingpin and airbag
Curt E - 04/12/2020


by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


I didn’t give a rating yet because it depends on the outcome of this order. I received the pinbox I ordered, installed it, but it was damaged. The airline and fitting was broken off of the airbag. If my order gets replaced with a new pinbox, I will be satisfied.


Comments
I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 02/23/2022


by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


This hitch is great, no more chucking and it also takes the hard bounce out. Would recommend to anyone. You will need to adjust the pressure in the air bag to suit the weight of your pin. 100% better pull, you wont be sorry.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


Unit arrived in good condition. Was a breeze to install, about a 1 hour job with 2 people including removal of old Tri-Glide. Didn't like the "banging" back and forth with the tri-glide.
The only issue I had was having to drill pilot hole for breakaway switch screw. Non issue! Can't wait to make a haul with it. Alaska here we come!


Comments
We put over 9000 miles on our new setup. The difference in the ride was amazing! Wouldnt have any other setup. I did add airbags to the truck as well. At times we had to look back to see if the trailer was still there. Its a 40 ft. toy hauler towed with a F350 dually, 6.7 powerstroke.
ROY J - 05/03/2018



by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


Had the flexair pin box on a slider. I hated having to stop get out and slide the hitch back just to make a sharp turn. So I decided to go with the Airborne Sidewinder. So far it I has been a great hitch and I’m very pleased with its performance. Now I can make better than 90 degree turns anytime anywhere.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


I have a 40 foot, 16,000 GVWR fifth wheel towed by a 1 ton, SRW, long bed with Timbrens also purchased from etrailer. The FW came with a Rotaflex kingpin. The kingpin did a good job with chucking, but the overall ride was very rough. I decided to go with the Reese Fifth Airborne.
We went on a 250 mile trip just before installation of the Reese Fifth Airborne. My wife likes to knit while riding. There were stretches of the interstate where she would have to stop because the ride was so rough. We happened to go over the same stretch of road after the installation of the Reese Fifth Airborne. She did not have to stop her knitting once. The road doesn't turn smooth as glass with this kingpin, but the jarring is eliminated and turned into a a smooth, more subtle bounce.
There are similar products on the market and other setups that are greatly more expensive. IMO, the Reese Fifth Airborne works very well, is relatively affordable and doesn't detract from the looks of the FW. And, of course, purchasing from etrailer is great.


Comments
Im continuing to be pleased with the Reese Fifth Airborne. Hard jolts are minimized. Just dont feel nearly as beat up after a day of towing.
Edward K - 05/01/2021


by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


The 5th Airborne Air Ride Coupler is very well made with quality welds.
Installing on a 2010 Cyclone 3612 Toy Hauler, I did have to cut about 1/2 inch from the fiberglass at the top front of the Lippert Trailer Mount. This modification provided the 3/8"
vertical movement required to allow the front 3 bolt holes to line up.
Other than the small fiberglass trim, a very clean installation.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


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.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


Received my 5th Airborne pin box in 3 days. I didn’t have any help readily available and I couldn’t wait. It was a direct replacement of my old pin box. The guy I was emailing was very helpful and helped me correct my order as I ordered the wrong one and caught my mistake before it processed. He was great to work with as erailer always is. Highly recommend these guys for all your trailering needs.
It was a little aggravating to install alone with some makeshift braces and 2 large screwdrivers to line up holes. Be sure to sand the inside of the frame if any rust or anomalies are present. Other than that, was a simple install and fit as it should. Thank You etrailer!




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


This item arrived quickly. There was some rust inside of the mounting cavity that had to be removed before installing the 5th Airborne. You may also experience some swelling from the manufacturer welding up the pin box cavity. Once this is cleaned up, installation is easy.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


Wow...what a difference!
Replaced our
pin box with the 5th Airboure and the ride immediately improved. Almost no chucking!
Even my wife noticed how nice and smooth the truck now rides.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


I contacted etrailer several times trying to figure out how to fix my problem. Everyone there that I spoke with was very knowledgeable and helpful. They shipped the product right away and I received it a day before expected. I can't say enough about the great people at etrailer. I would definitely recommend them to anyone looking for trailer parts.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


I really like this hitch. It must be setup properly to function. Initial assembly takes a bit to fit everything together and grease is a must. I ended up pressing the two halves together at work. When I received the hitch, the airline for the airbag was bent and needs to be replaced. I never contacted etrailer for this since it’s a fairly straight forward fix. My camper pulls smooth and the hitch takes away a lot of the chucking. Backing up with the pivot point now under the camper and not at the hitch takes a bit to get used to but ultimately works better. I’ve been pulling trailers all my adult life commercially. I am happy with the steel and build quality. I doubt I will have any manufacturing issues with this hitch. Again, my only two complaints are initial assembly is a little more than homeowner grade, as well as getting the non pivot block, that stops the King pin rotation, is a bit tedious to adjust. The simple way to install this is to have it done at a professional shop that has experience with these hitches.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


Dana at etrailer was the best, order shipped same day and I received it within two days. Installation of the 5th Airborne was very easy and a well built product.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


am happy with my new pinbox. Installation was very easy with some help, fit perfectly. I had to run a die nut over 2 trunion bolts that were damaged during shipping. I haven't tried towing yet, but so far I am pleased with my purchase. I have enclosed some pictures of my installation.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


Was looking for a fifth wheel trailer porpoising solution and this helped considerably. It took some time to figure out the right air pressure to put on king pin and air lifts I have on truck to find the right combination. Although I miss the chuck free Motoryde feel, I’ll take a slight chucking vs. my trailer coming apart from bouncing up and down. Much cheaper and convenient solution to others I have seen.




by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


At this time I’m going to give it 3 stars. It was damaged in shipping. etrailer is great and they said it won’t hurt anything. I’m going to put it on and give it a go and maybe come back and edit the review


Comments
I apologize for the shipping damage. I am glad that customer service has taken care of you.
-- Etrailer Expert Sierra K - 10/15/2021


by:

Review from a similar Airborne King Pin in Fifth Wheel King Pin


This will raise your pin height. I had to lower fifth wheel plate in truck and modify air ride coupler to fit correctly in pin box. Intalled in 2020 coachmen chapparral 392mbl



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    view full answer...
  • How to Determine the Correct 5th Airborne Pin Box Replacment for a 2006 Alfa Gold 5th Wheel
    To ensure you are getting the correct pin box for your 2006 Alfa Gold fifth wheel trailer we will need to know the make and model of your current pin box. If you cannot determine the make and model of your pin box, then you can call the trailer manufacturer with the trailer serial number and they should be able to tell you which pin box you have. If they are unable to help you, then you can take some measurements of your pin box and I can use those to determine what replacement pin box...
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  • Recommended Maintenance for 5th Airborne Sidewinders
    The maintenance the Sidewinder recommends for your Sidewinder is: BEFORE EACH TRIP: 1. CHECK YOUR EQUIPMENT: Check that condition of all of your towing equipment and keep it in top condition. 2. Check that the torque of the (4) cap bolts is 45 ft-lbs. 3. Check to see that all bolts are properly tightened. 4. Check wedge engagement in the fifth wheel jaw, refer to wedge adjustment portion of installation instructions. MAINTENANCE: 1. For ease of hookup; frequently lubricate the wedge...
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  • Is an Offset Needed When Towing Fifth Wheel Trailer with Short Bed Truck When Sidewinder is Used
    For towing a fifth wheel trailer with a truck that has a 6-1/2 foot bed the Sidewinder like part # ST400-5AS16K would not require an offset adapter if it was installed on your trailer. It would move the pivot point back 22 inches for the trailer which would give you more than enough clearance for tight turns. Sidewinders are pin box specific so you will first need to know what pin box you have now in order to pick out the correct one. There should be a sticker or a stamping on the OEM...
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  • Will a Sidewinder Fit in Place of a Leland 7900 Pin Box
    According to my contact at Reese the Leland 7900 pin box has the same measurements as the 7910. But it is always a good idea to check just to be on the safe side. If your pin box has the following measurements then Sidewinder # ST400-5AS16K will fit: Distance from first row of bolt holes to last row on center - 7 inches Distance vertically from one bolt hole to another on center - 1-1/2 inches Bolt size - 1/2 inch bolts Bolt head size - 3/4 inch Bolts per side - 6 Center of first row of...
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123. . .9



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Info for this part was:

Employee Andrew K
Video by:
Andrew K
Employee Zach D
Video by:
Zach D
Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Jenny M
Updated by:
Jenny M
Employee Isabelle B
Updated by:
Isabelle B
Employee Dustin K
Video Edited:
Dustin K
Employee Randy B
Installed by:
Randy B
Employee David F
Test Fit:
David F

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