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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. 4.5K Pin weight.
Features:
Specs:
Notes:
| Calculated Pin Weight | Executive Pin Weight Capacity Required |
|---|---|
| 1,600-2,599 lbs | 3,500 lbs |
| 2,600-3,599 lbs | 4,500 lbs |
| 3,600-4,599 lbs | 5,500 lbs |
| 4,600-5,599 lbs | 6,500 lbs |
| 5,600-6,599 lbs | 7,500 lbs |
| 6,600-7,599 lbs | 8,500 lbs |
| 7,600-8,599 lbs | 9,500 lbs |
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.
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.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Gwendolyn Y.
7/28/2025
Your winter trip sounds like it will be amazing! Where are you going to be traveling to out west?
Mike L.
2/27/2026
Thanks Randy! Please let us know how the install goes....
Brooke M.
6/11/2025
Wow that's great, Rusty! Happy to hear that even after some use it's working the way it should - glad it's able to cushion some of the rough roads out there for you :)
Brooke M.
6/16/2025
Why thank you for the kind words, Jeffery! I hear you about wanting the bed space. What kind of trailer are you pulling?
Brooke M.
6/19/2025
James D.
5/11/2026
Allen The Gen-Y pin box is a great upgrade! We appreciate you sharing the photos, looks really good.
Brooke M.
5/6/2025
Glad to hear it is off to a good start!
Rob
7/24/2023
A year in and still worth the $$$. Excellent hitch, super smooth.
David
3/16/2024
The Gen-Y hitch has actually gotten better over the last year - I guess due to the break-in period. It makes potholes and bumps very subtle and has reduced the beating my trailer takes. One addition I made was a trailer suspension upgrade. The combination of the Gen-Y hitch and the suspension upgrade has been worth every penny.
Do you have a question about this 5th Wheel Pin Box?
Condition: Installed
Notes: Item has been previously test fitted and has minor comsetic install marks.
Info for this part was:
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Brooke M.
6/26/2025
Wow, that's awesome, Rick. Where did you go on the 500 mile journey? When is the Boston trip taking place? I'm glad you are happy with the hitch!