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  1. Gooseneck and Fifth Wheel Adapters
  2. Gen-Y Hitch
  3. Fifth Wheel Trailer to Gooseneck Hitch
  4. Replaces King Pin
  5. King Pin Adapters
  6. Adapts Trailer
Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 25K GTW - 4.5K TW

Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 25K GTW - 4.5K TW

Item # GY38FR
Retail:$1,807.72
Our Price: $1,528.43
You Save: $279.29
Gooseneck and Fifth Wheel Adapters
This item qualifies for Free Truck Freight Shipping
Shipping Weight: 162 lbs
Quantity: 
In Stock
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This shock-absorbing pin box works with your gooseneck hitch to give a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. Auto-latch allows for easy hookup. 4.5K pin weight. 1-636-306-4830 to order Gen-Y Hitch gooseneck and fifth wheel adapters part number GY38FR or order online at etrailer.com. Free expert support on all Gen-Y Hitch products. Guaranteed Lowest Price and Fastest Shipping for Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 25K GTW - 4.5K TW. Gooseneck and Fifth Wheel Adapters reviews from real customers.
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  • Reviews (116)
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Gen-Y Hitch Gooseneck and Fifth Wheel Adapters - GY38FR

  • Fifth Wheel Trailer to Gooseneck Hitch
  • Replaces King Pin
  • Gen-Y Hitch
  • King Pin Adapters
  • Adapts Trailer

This shock-absorbing pin box works with your gooseneck hitch to give a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. Auto-latch allows for easy hookup. 4.5K pin weight.


Features:

  • 5th-Wheel-to-gooseneck adapter box lets you tow your 5th-wheel trailer with your gooseneck hitch
    • 5th-Wheel pin box replaces the factory pin box on your trailer
    • Coupler attaches to your truck's gooseneck hitch ball
  • Shock-absorbing design ensures a smooth, steady ride
    • Technology functions like a torsion axle to limit transfer of road shock from trailer to truck and vice versa
      • Reduces chucking and rough fore-and-aft motion
      • Limits bounce and jarring up-and-down motion
    • No airbags to maintain and fewer moving parts to repair or replace than with other shock-absorbing solutions
  • Self-latching lever automatically engages when hitch ball is in socket
  • Cable latch allows you to easily uncouple from outside of your truck bed
    • Included cable attaches to lever - just pull on it to disengage the latch
  • Pin weight scale is built in to help you balance your trailer
    • Meter lets you know if your load needs to be adjusted before you tow
  • Cross-shaped holes provide attachment points for safety chains
  • Heavy-duty steel construction
  • Powder coat finish resists wear and corrosion
  • Simple, bolt-on installation
    • Mounts with existing bolts
  • Made in the USA


Specs:

  • Designed to replace Lippert 1621 and 1621 HD 5th-wheel pin boxes
  • Towing capacity: 25,000 lbs
  • Pin weight capacity range: 2,000 lbs - 4,500 lbs
  • Ball size: 2-5/16"
  • 5-Year limited warranty


Notes:

  • In order for the pin box's shock absorption to work correctly, make sure your pin weight is within the pin weight range.
  • To calculate correct towing weight for Gen-Y hitches, use this formula: GVWR x 0.22 = TW.
  • Because the Gen-Y Hitch Executive is shorter than the Lippert 1621 or 1621 HD pin box, the clearance between your trailer and tow vehicle during turns might be reduced.

Calculated Tongue Weight Executive Tongue Weight Capacity Required
500-1,500 lbs 2,000 lbs
1,501-3,000 lbs 3,500 lbs
3,001-4,000 lbs 4,500 lbs
4,001-5,000 lbs 5,500 lbs
5,001-6,000 lbs 6,500 lbs
6,001-7,000 lbs 7,500 lbs
7,001-8,000 lbs 8,500 lbs

Fifth Wheel to Gooseneck Adapter

Say your truck has a gooseneck hitch for towing your horse trailer, but you want to go camping with your new fifth wheel. You could outfit your truck with a new fifth-wheel hitch that attaches to your existing gooseneck hitch, but that means having to move a heavy, bulky hitch into and out of your truck bed all the time.


You could also purchase an adapter that bolts onto your trailer's existing pin box. But adding a new component to your setup can keep your pin box from working how it was designed. King pin adapters can create a stiff ride and can even strain your fifth wheel's frame by adding too much height at the connection point.


A better option is to use this gooseneck-compatible pin box to easily tow your fifth-wheel trailer with your truck's gooseneck hitch. The box replaces your trailer's existing pin box, which means it's designed to act as a part of your trailer instead of simply bolting over your king pin like an adapter does.


Built-In Shock Absorption for a Smooth Ride

Executive torsion with cable

If you've ever towed a fifth-wheel trailer before, you're no stranger to road shock. Driving over uneven terrain can result in a rigid, bumpy ride. And uncomfortable fore-and-aft chucking can occur when you're starting and stopping. When all of the motions combine, the road shock can even potentially damage your truck or trailer.


This Gen-Y Hitch torsion pin box is designed to absorb road shock at the connection point to create a safe, smooth ride. This is thanks to the internal construction of the box, which is similar to that of a torsion axle.


Pivot points are built into the Gen-Y pin box adapter. This allows for movement between the box, which attaches to your trailer, and the coupler tube, which connects to the gooseneck hitch ball in your truck bed. When your trailer bounces or jerks, the coupler tube will move accordingly.


torsion diagram

Built into the Gen-Y pin box are tubes with inner bars that are surrounded by rubber cords. As the coupler end moves, these inner bars twist inside of the tubes, attempting to follow the coupler's motion. But the rubber cords prevent the bars from twisting too far. And as each bar turns, these cords compress to absorb the rough shock. This means that any shock experienced by your truck can be absorbed before it reaches your trailer, and the shock experienced by your trailer won't get transferred to your truck.


Easy to Couple and Uncouple

auto latch and cable

The Gen-Y pin box adapter makes hooking up your trailer easy thanks to its automatic latch. When your hitch ball moves into the coupler tube, the latch instantly engages. No need to manually close the socket once the coupler is on the ball.


Disconnecting is fast and easy too. This normally requires that you crawl into your truck bed to access and release the latch. But the Gen-Y adapter box can be disconnected from outside of your truck bed. The included cable attaches to the latch on the coupler's base. Just run the cable up your trailer frame and secure it in a convenient place. When you're ready to disengage the coupler, simply pull the cable to release the ball from the socket. No need to climb into your truck bed.


Easily Check Your Vertical Load

scale

The vertical load, or pin weight, refers to the weight that a fully loaded trailer exerts downward on the hitch ball in the truck bed. Too little vertical load can cause trailer sway and too much can cause poor performance.


This Gen-Y pin box has a built-in scale so that you can check to see if your vertical load is too high or too low. The top red mark on the scale indicates your maximum vertical load (4,500 lbs). The bottom red mark indicates no vertical load (0 lbs). For the built-in shock absorption to function effectively, the scale's white indicator marker should be within the green section when you hook up your trailer to tow.



GH-8055AL GenY Hitch Executive Fifth-Wheel King Pin to Gooseneck Converter with Auto Latch Coupler - LCI 1621/1621 HD - 25,000 lbs





Customer Satisfaction Score:


Customer Reviews

Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 25K GTW - 4.5K TW - GY38FR

Average Customer Rating:  4.8 out of 5 stars   (116 Customer Reviews)

This shock-absorbing pin box works with your gooseneck hitch to give a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. Auto-latch allows for easy hookup. 4.5K pin weight.

by:

The Gen-Y gooseneck has been excellent! I now have approximately 12k miles on mine and it rides very nicely with very limited chucking and handles rough roads very well. I’d highly recommend that you contact Gen-Y BEFORE ordering to ensure you get the correct load rating product. Gen-Y and Etrailer have provided excellent customer and tech support! This product definitely frees up your truck bed and does require a precise line up to hitch.




by:

Definitely recommend this hitch




by:

I have a short bed diesel truck with a B&W gooseneck system installed. I purchased the GEN-Y Gooseneck to install on my new 5th wheel. I have a gooseneck horse trailer, so this choice was obvious. I ordered the GEN-Y from etrailer, we had a lot of back and forth discussions on shipping and arrival dates. I had my local RV dealer install it, way to heavy for me to wrangle. The RV dealer had never heard or seen the GEN-Y product line before, they were so impressed that they are now the authorized GEN-Y dealer in my area. When I hooked my 5th wheel I didn't have enough space between the truck cab and the 5th wheel to maneuver. I had mistakenly thought the GEN-Y would provide enough added space, wrong. I called etrailer to discuss and express my concerns and asked if they had any info to help me. The courteous customer service representative acted like they had never heard of this problem before and would certainly look into it and call me back. Nope, never heard from etrailer.com again. I did my own research and found a gooseneck extension ball manufactured by B&W and it is rated at 20k. This made it possible to actually maneuver the 5th wheel. This B&W extension should be recommended by etrailer every time a Gen Y gooseneck hitch is sold to a short bed truck owner. But, since etrailer had never heard of this problem don't count on it. I am very disappointed with their customer service.
Regarding the GEN-Y, this is a beast and built so well. While towing my 5th wheel I am fully enjoying the torsion shock absorbing technology. One area for improvement on the GEN-Y, the release cord does not have method to keep the release cord open without holding it. On a competitors version (Reese) they have a method to hold it open. See pic for this method, I plan on adding this to my GEN-Y, which is otherwise a far superior product in my opinion. Love the GEN-Y, not so much for etrailer.




by:

This was better than I expected. Truck felt smoother going down the road with our new 5th wheel than with our previous rig with a standard 5th wheel hitch even though the new rig was about 3.5k lbs heavier. I believed the claims of a smoother ride because of the torsion action but I was really amazed at how much better it was. The one I was skeptical about was the improved mileage claim. After a 7 week long RV trip putting over 4K towing miles with a heavier, (and slightly taller trailer), I was averaging the same, even slightly better, as with my previous rig with the same tow vehicle. This setup also freed up the bed of my truck tremendously. It also lowered my pin weight/payload number by about 70lbs as compared with the original Pinbox and 5th wheel hitch I had. Great product.




by:

Engineering looks great it was simple to install but honestly have not had a chance to pull the trailer yet.




by:

Shipping was right on schedule it works excellent how had to buy a taller ball wish it was about 3 inches longer in length so I could clear my cab in tight terms




by:

The hitch just arrived. Shipping was fast and it was in perfect condition. I'll be doing the install on my Momentum m-class 381m later this week and then taking it on a short weekend trip. I'll update my review after all this is done.




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Review from a similar Executive King Pin in Gooseneck and Fifth Wheel Adapters


Man,this thing is GREAT! It was 1 day late on delivery, but other than that, it bolted right up using the existing holes, NO DRILLING! I was THRILLED!
It works as advertised, the powder coat paint is awesome, the auto latch works flawlessly. I am very pleased
I would recommend anyone wanting to switch a 5th wheel kingpin to a gooseneck to use Gen-Y. They got their act together!




by:

Review from a similar Executive King Pin in Gooseneck and Fifth Wheel Adapters


I originally had an Andersen ultimate
Made
me nervous with cracking welds etc
Switched to the Gen Y
Never looked back
Took a few hundred miles to break in but now it pulls super smooth




by:

Review from a similar Executive King Pin in Gooseneck and Fifth Wheel Adapters


Installation took 1 hour with 2 people. Made very well. Pulled trailer great and expect ride to get better with break in. I went with 3.5k and on lighter side of recommended king pin weight. Shipping was quick and had email notifications the whole way. Will use etrailer again




by:

Review from a similar Executive King Pin in Gooseneck and Fifth Wheel Adapters


Direct fit, easy installation, only thing is had to move to the top set of holes on the trailer brackets. Looks great




by:

Review from a similar Executive King Pin in Gooseneck and Fifth Wheel Adapters


This was the perfect replacement for my 5th wheel king pin. It was easy to install and has a much smoother ride! I would definitely purchase this again!




by:

Review from a similar Executive King Pin in Gooseneck and Fifth Wheel Adapters


Room is too short coupled when backing up to your camper. Do not buy this for a replacement.


Comments
This coupler will have the same height adjustments as the Lippert 1621 and 1621 HD pin box however will be roughly 2 inches shorter overall then your currently pin box so depending on the bed length of your truck you may have cab to trailer clearance issues if not using an offset gooseneck ball.
-- Etrailer Expert Jenny N - 10/10/2022


by:

Review from a similar Executive King Pin in Gooseneck and Fifth Wheel Adapters


Installation was very straight forward, it is heavy so you need something to prop it up for you while you get at least one bolt started in each side. I used the bucket on my tractor to hold it up. I only have one tow in so far for about 50 miles so still early to review. It certainly works as advertised for taking out a lot of the trailer feedback on rough roads, uneven transitions, etc. It is an improvement in ride quality and makes towing a big fifth wheel more comfortable. Necessary? Probably not but it does spoil you a little bit. One problem though that Gen-Y is working on fixing is the ball to pinbox is a little bit longer and I did hit the bed cap at about 60 deg of turn while backing in at an angle. It cleared when I tested it in the flat driveway, but not by much. They are going to come up with a fix. I'm at 7 1/2" clearance from the overhang to the bed caps sitting flat. This is with a '18 Chev Silverado HD 8' bed and a '19 Momentum 351M




by:

Review from a similar Executive King Pin in Gooseneck and Fifth Wheel Adapters


This works absolutely perfect in a Ram 3500 with 6 1/2 ft bed, and the Gen Y gooseball hitch.
I think if more people knew of this combination, the fifth wheel style hitch, Anderson hitch and others would become obsolete.
Get to your destination, disconnect, pull out the ball, and the bed of your truck is free!



25
116
Show More Reviews

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    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Alexander C
Written by:
Alexander C
Employee Michael B
Installed by:
Michael B
Employee Clayton O
Test Fit:
Clayton O

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


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