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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. 30000 lbs GTW
  6. King Pin Adapters
Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1116/1716 - 30K GTW - 4.5K TW

Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1116/1716 - 30K GTW - 4.5K TW

Item # GY78FR
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Our Price: $1,465.86
Gooseneck and Fifth Wheel Adapters
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Shipping Weight: 173 lbs
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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. Manual latch allows for simple hookup. 4.5K pin weight. 1-800-940-8924 to order Gen-Y Hitch gooseneck and fifth wheel adapters part number GY78FR or order online at 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 1116/1716 - 30K GTW - 4.5K TW. Gooseneck and Fifth Wheel Adapters reviews from real customers.
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Gen-Y Hitch Gooseneck and Fifth Wheel Adapters - GY78FR

  • Fifth Wheel Trailer to Gooseneck Hitch
  • Replaces King Pin
  • 30000 lbs GTW
  • 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. Manual latch allows for simple hookup. 4.5K pin weight.


  • 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
  • Coupler socket secures to hitch ball with pin-style 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
  • Filler shims insert between pin box and your trailer's wings
  • 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 1116 and 1716 5th-wheel pin boxes
  • Towing capacity: 30,000 lbs
  • Pin weight capacity range: 2,000 lbs - 4,500 lbs
  • Ball size: 2-5/16"
  • 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.
  • 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 1716 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

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.

Easily Check Your Vertical Load


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 red section on the top of the scale indicates your maximum vertical load (4,500 lbs). The red section on the bottom of the scale 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-8055 GenY Hitch Executive Fifth-Wheel King Pin to Gooseneck Converter with Manual Latch Coupler - LCI 1116/1716 - 30,000 lbs

GH-8000 1/4" Filler Shims for Gen-Y Executive Fifth Wheel Adapters

Video of Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1116/1716 - 30K GTW - 4.5K TW

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

Video Transcript for Review of Gen-Y Hitch Gooseneck and Fifth Wheel Adapters - Shock Absorbing Pin Box - GY78FR

Hi there, I'm Michael with Today, we're gonna take a quick look at this Gen-Y Hitch Shock Absorbing Fifth Wheel to Gooseneck Pin Box. This is gonna replace your factory pin box on your fifth wheel trailer. It's going to allow you to then pull your trailer with your gooseneck ball in your truck bed. So whether you are one of those that typically pulls gooseneck trailers, and you've got like a fifth wheel camper that you're wanting to pull rather than having to load that big, heavy fifth wheel hitch into your truck bed. And then take it back out, when you're ready to go back to work, this is going to convert your fifth wheel trailer to work with that gooseneck ball.

So it is gonna make it a lot more convenient for you. And this is designed specifically to work with the Lippert 1116 and 1716 fifth wheel pin boxes. So, it's gonna be a very simple installation. Basically, you'll just unbolt the original pin box, lower that down. Put this one up in its place.

They do include these shims here that you'll put in between the pin box and then your wings on your trailer. And then just reuse that original hardware to put it in place. So while it's very simple, it's not going to be super easy because these are very heavy. So you'll definitely want at least a couple of sets of hands to lower that original pin box, put this one up in its place, make sure those shims are in the correct position and then put your hardware in. And then once it's all installed, of course, you'll have your coupler that's going to hook on to your 2 and 5/16 inch hitch ball in your truck bed.

And they've got the pin style latch here. That's going to make sure that that ball is securely in there as you're going down the road. Now this is gonna be just a tiny bit shorter than your Lippert 1716 pin box. So, that could potentially cause a little bit of clearance issues for you when you're turning. And you can see I've got this approximately level.

This lowest frontmost hole here, I'm measuring it right at 9 and 3/16 of an inch to the center of that hole. So if you measure from the bottom of your coupler to that hole to kind of give you an idea of how much shorter this is than your pin box. But if you have that Lippert 1116 or 1716, this is gonna fit in place for you. Like I said, you might just lose a little bit of that clearance as you're turning. This is a nice, heavy-duty steel construction. Gen-Y has a great reputation for building very robust, solid products. And this is no exception. It's gonna hold up well, do a good job for you. It's got a 30,000 pound towing capacity. Of course, that is the weight of the trailer and the load included. It's gonna have a pin weight capacity range of between 2,000 pounds and 4,500 pounds. And the reason for that range is because of our shock absorbing technology here. So, if you have anything less than 2,000 pounds, it's not really gonna engage that system properly. If you have more than that 4,500 pounds, it's gonna be too much for the system. So you don't wanna overtax it. So, you want to make sure that you're in that range. To help you with that, they do include this little meter here, so you can see it's got that green and red on that sticker. And then you've got that white line there. So you wanna make sure that white line lines up with that green portion, and that's going to indicate that it's all within that ideal range. If not, you'll have to rearrange some of the load in your trailer to get into that position. But so, it's nice that they include that to help make sure that you're within that right range. Our shop, shock absorbing technology here, you can see, we do have these arms on both sides. Basically the way this works, at each pivot point, it's gonna function like a torsion axle. So if you're familiar with that concept, I've got a cutaway here, so you can kind of see a little bit better. So we're gonna have these square bars on the inside and then these rubber cords all around it. So, as your arms flex with the movement of the truck and the trailer as you're hitting bumps in the road and that sort of thing. That bar is gonna turn against those rubber cords. It's gonna help to kind of absorb that shock and movement. So it is going to make it a much smoother, more comfortable ride for you. It's gonna reduce your chucking and rough fore and aft motion. It's also gonna help limit your bouncing, jarring up and down motion. So, it's gonna be a lot smoother for you and for the trailer, whatever you're pulling. If it's a camper, you'll be able to get to your destination without dishes having fallen out of cabinets and that sort of thing. So it is going to make it a lot smoother for you because it's not going to transfer the shock from the trailer up to the truck and vice versa. That any bumps that you hit in the truck, aren't gonna be transferred back to the trailer. So it's gonna be a lot smoother for both sides. This does use that torsion kind of technology. So rather than like airbags that are gonna require a lot of maintenance, make sure that you have the right air pressure and that sort of thing in there. This is basically just gonna be like a set it and forget it kind of situation. So once you get it installed, it's gonna automatically use that technology to absorb that road shock. Of course, you will wanna make sure that you're within that weight range as we talked about, but it's gonna be a lot less to maintain, a lot fewer moving parts that will need to be replaced as you're going down the road over the years. It will hold up well for you for a long time. So like I said, this is gonna be a nice high quality, heavy-duty steel. They do have this powder coat finish that's gonna help resist wear and corrosion. On the sides here, you've got these cross-shaped holes that's gonna be where your safety chains can hook into. So you'll have that secondary connection there. And this is made here in the USA, so you can trust it is gonna be a nice quality, like I said, Gen-Y is well known for building very robust, durable products. So, I think you'll be very happy with this. If you are wanting to convert your fifth wheel to work with your gooseneck ball. So that completes our look for today. Again, I'm Michael with Thanks for watching..

Customer Reviews

Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1116/1716 - 30K GTW - 4.5K TW - GY78FR

Average Customer Rating:  4.9 out of 5 stars   (67 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. Manual latch allows for simple hookup. 4.5K pin weight.

Ask the Experts about this Gen-Y Hitch Gooseneck and Fifth Wheel Adapters

  • Recommended Gen-Y 5th Wheel to Gooseneck Adapter on a 2019 Cedar Creek Camper
    The Gen-Y Shock Absorbing 5th Wheel to Gooseneck Adapter # GY78FR is specifically designed to be replace a Lippert 1116 and 1716 5th-wheel pin box. If you have either of these pin boxes, then you are good to go. If you are unsure of your pin box, however, it is definitely a good idea to verify which you have. This can be easily done by contacting the manufacturer of your trailer to ask. All you will need is the VIN and they should be able to tell you as they keep this on file. In the...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
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:
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