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  1. Fifth Wheel King Pin
  2. Gen-Y Hitch
  3. Lippert 1621
  4. Lippert 1621HD
  5. 30000 lbs GTW
  6. Upgraded Pin Box
Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Lippert 1621 and 1621 HD - 30,000 lbs - 5.5K TW

Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Lippert 1621 and 1621 HD - 30,000 lbs - 5.5K TW

Item # GY46FR
Our Price: $1,298.99
You Save: $219.26
Fifth Wheel King Pin
Shipping Weight: 175 lbs
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This shock-absorbing pin box provides a smooth, safe ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. The weight scale lets you monitor your vertical load. 5.5K pin weight. 1-800-940-8924 to order Gen-Y Hitch fifth wheel king pin part number GY46FR or order online at Free expert support on all Gen-Y Hitch products. Great prices and Fastest Shipping for Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Lippert 1621 and 1621 HD - 30,000 lbs - 5.5K TW. Fifth Wheel King Pin reviews from real customers.
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  • Reviews (25)
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Gen-Y Hitch Fifth Wheel King Pin - GY46FR

  • Lippert 1621
  • Lippert 1621HD
  • 30000 lbs GTW
  • Upgraded Pin Box
  • Gen-Y Hitch
  • Absorbs Road Shock and Reduces Chucking

This shock-absorbing pin box provides a smooth, safe ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. The weight scale lets you monitor your vertical load. 5.5K pin weight.


  • 5th-Wheel king pin box upgrades the existing pin box on your 5th-wheel trailer
    • King pin inserts into your truck's 5th-wheel hitch
  • 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
  • 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
  • Heavy-duty steel construction
  • Powder coat finish resists wear and corrosion
  • Simple, bolt-on installation
    • Mounts with existing bolts
  • Made in the USA


  • Designed to replace Lippert 1621 and 1621 HD 5th-wheel pin boxes
  • Towing capacity: 30,000 lbs
  • Pin weight capacity range: 2,500 lbs - 5,500 lbs
  • 5-Year limited warranty


  • In order for the pin box's shock absorption to work correctly, make sure your pin weight is within the pin weight range.
  • 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.

Built-In Shock Absorption for a Smooth Ride

Executive torsion

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. This allows for movement between the box, which attaches to your trailer, and the king pin, which connects to the fifth-wheel hitch in your truck bed. When your trailer bounces or jerks, the king pin 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 king pin moves, these inner bars twist inside of the tubes, attempting to follow the pin'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.

Easily Check Your Vertical Load

Executive scale

The vertical load, or pin weight, refers to the weight that a fully loaded trailer exerts downward on the hitch 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 (5,500 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-8060 GenY Hitch Executive Fifth-Wheel King Pin Box with Torsion Shock Absorption - LCI 1621/1621 HD - 30K

Customer Satisfaction Score:

Customer Reviews

Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Lippert 1621 and 1621 HD - 30,000 lbs - 5.5K TW - GY46FR

Average Customer Rating:  4.8 out of 5 stars   (25 Customer Reviews)

This shock-absorbing pin box provides a smooth, safe ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. The weight scale lets you monitor your vertical load. 5.5K pin weight.


I would rate it a 5Star, on the customer service and the delivery. I was also impressed that it was delivered on or very close to the date given at time of order.
Haven’t towed it yet with the new equipment installed. Will be towing it next week on Tuesday, looking forward to it. Will go back and leave comments on how it does.

Etrailer Expert

Jenny N.


I hope everything is ok with this replacement king pin. I am happy to help. Please reach out if you have any concerns.


This hitch makes towing our 44ft toy hauler a pleasure


Install went smooth. I'm 75 and with a small car jack on my truck tail gate it went very quickly. Blocked the pin end on bed so it wouldn't tip and jacked up the back. Got one rear hole lined up bolted and then just jacked up the pin end and put those bolts in. I will hook it up today and see how it sets. Might have to lower my truck hitch one notch if it sits too high - we will see. ( Momentum 395 MS/ F350)


This pinbox fixed two problems I was having. I can know turn 90 degrees and I have up to 10 inches of clearance from top of bed rail to 5th wheel overhang


Excellent hitch, rides smooth and quit e.





Super fast shipping. Easy install. Heavy buggar so hired two young ones to hold it while I bolted it into place. Coming up into the 1000 mile usage mark and it is doing its job well absorbing road shock. In New York state now. PA roads are awful bumpy so it got several good tests.


The hitch bolted up easy, and seems to react well between the truck and 5th wheel


Thule products are built to last decades. So a year later, this is every bit as great as the day I installed the crossbars on my roof.


I went from a standard stock hitch to the gen Y. The difference is just amazing. When I get a new 5th wheel I will definitely be getting Gen Y again. I have zero complaints.


It's been rock solid on my 2022 Sorento PHEV. I combine it with a hitch rack, so it's nice that I can easily remove and reattach quickly. I haven't noticed much wind noise or increase in MPG like I did with an old rack+fairing.


Etrailer is an awesome website. They are very responsive to questions. Installation was simple and straightforward. I have not towed with this new pinbox as my rig is bedded down for a long winter nap in the northeast.


Thank You for your interest in my experience with the Gen-Y King PIN Hitch I purchased last year. I love the Gen-Y KP Hitch. The torsion mechanism has significantly smoothed out the ride compared to the standard Lippert King KP Hitch that came standard on my Grand Design Reflection 340RDS 5th Wheel. I also like that the Gen-Y KP Hitch is 4" shorter than the Lippert KP Hitch as I get a little more turning radius with my short bed Ram. Also, the contour of the Gen-Y KP Hitch allows a little more clearance over the top of my Gator Tonneau Cover Rails v.s. the Lippert KP Hitch.

Now for the "not so good" news about my purchase experience. The packaging of the Gen-Y Hitch was way below the quality standard I would expect from E-trailer. Please see attached file.

I'm sorry I did not send you this information regarding the poor packaging and subsequent minor damage to the Gen-Y KP Hitch which I was able to correct upon install of the Hitch. Last year was very busy for me and I was not able to send this information sooner.


Extremely pleased with the product and the delivery of the product. Installation was completed and very easy,


I only received one of the 3 packages


Everything came quickly and all at one time. The instructions were clear, communications were frequent, and follow-up was immediate. Fantastic customer service combined with great and easy selections.


Thanks again for the excellent, professional, knowledgeable customer service. It is refreshing to be able to talk to someone who is friendly and glad to help with specialized needs such as racks, hitches, etc. You won't find that kind of service in a lot of places. That is why I recommend etrailer to all of my friends.
The 2022 Hyundai Santa Cruz is getting very popular and lots of people are wondering when a truck rack, or ladder type rack will be available for it. It is a great truck but the roof does not allow larger items like longboard surfboards or SUP boards or kayaks to be installed on the roof. There just is not enough room for standard surfboard racks to be spread out long enough to safely carry these longer items. Thule says 27 1/2" is the standard distance between bars but all of us surfers, windsurfers know that one needs more distance between the crossbars to carry a 9' surfboard or greater. I was going to use the Thule racks I just ordered on my 2022 Hyundai Santa Cruz, but it seems there is just not enough room on the roof to get the distance needed. Plus, the roof is kind of rounded toward the front so the front bar will be down at an angle. I ended up putting the rack on my Hyundai Tucson. So, there is a need out there for a different system for the Santa Cruz. Any advice on a roof rack for the Santa Cruz would be appreciated. Maybe I am looking at it wrong and I don't need as much room on the roof as I think to transport a longboard. I know there is a lot of discussion on this subject on the Santa Cruz forums online. I use a 9', and 10' longboard (surfboard).


This is the 2nd large order (hitch components & roof rack) I placed within 2 weeks. Each was processed quickly and arrived ahead of the projected delivery date. Further, the website was extremely easy to use with excellent configuration and installation articles and videos. I dealt with Quinn, a phone rep, who did a great job answering my questions and configuring the equipment. I highly recommend doing business with etrailer.


Abundant notification when the order would arrive, which it promptly did. Great fit and finish.


the pin box worked awesome. If I need an other I will get the Gen y again


Fit perfect.



Great customer dwevice and quick delive ry.

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Employee Michael B
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Employee Kathleen M
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Employee Wilson B
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