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This Rota-Flex pin box has a pivoting head with a built-in rubber compound that works to reduce chucking and absorb road shock, resulting in a smoother ride and less wear and tear on your trailer. Replaces Lippert 1621 pin boxes.
Features:
Specs:
Notes:
The Rota-Flex pin box has a pivoting head and built-in rubber compound that help to reduce checking and absorb road shock for a smoother ride as you tow your fifth-wheel trailer.
The pivoting head on the Rota-Flex allows for controlled back and forth movement of the king pin to reduce the uncomfortable jarring known as chucking. Unlike a rigid pin box that has little give at the point where the trailer and the hitch are connected, the Rota-Flex can pivot slightly to compensate for those times that your trailer suddenly pushes or pulls on your tow vehicle. Because the pin box head - not the king pin itself - is moving, the chucking that often occurs when the king pin jerks around inside the hitch is significantly reduced.
A heavy-duty rubber compound is built into the head assembly of the Rota-Flex pin box. This rubber absorbs the bumps and vibrations, or road shock, experienced when towing a fifth-wheel trailer over rough roads. Standard pin boxes without any type of shock absorption transfer road shock to your trailer, resulting in potential damage to the trailer and an overall bumpy ride. The shock-absorbing rubber inside the Rota-Flex takes the beating so there's less wear and tear on your trailer or RV and you get a smoother ride.
Easy, Bolt-On Installation
The Rota-Flex is easy to install. Simply remove your existing Lippert 1621 pin box and install the Rota-Flex on your trailer or RV. The Rota-Flex uses the same bolts that held on your original pin box so no additional hardware is required. Plus, it comes out of the box ready to be put on your trailer, so no assembly is needed. Because the Rota-Flex is quite heavy, you should put it on an elevated surface or have a friend help you support its weight during installation.
Customer Satisfaction Score:
81% were satisfied with this product
19% of customers were not satisfied
Ratings & Reviews
Received on Wed. as planned. With a little help from my forklift, I had this trail air pin box installed in few hours. Fit perfect on my Sabre. Drove around the block, about 4 miles. This pulls so nice, it is like nothing behind you. Thanks etrailer.
It's a great pinbox. Really helped with chucking and compatible with my Demco sliding hitch. Also no issues with delivery, was helped by Pam and Jessie. They are awesome people to work with.
I received the RotaFlex on date that was scheduled although box was tore open all items were in box It would be great if mounting hardware and torque values were included I had to call trailer and ask for that information Everything went together perfectly
I have other on other trailers is why I purchased this one. Improves ride.
This pin box helps smooth out the ride better than the one I had on there. It’s also a few inches shorter so it clears the side rails of the pick up with a little more room so I was able to lower the trailer a couple inches to make it ride more level.
Hannah did an excellent job of working with me to find the correct upgrades for my towing system. 5 stars got her. Tge package arrived with the king pin poking through the box and having deep scratches. I think it will function ok. 3 stars for those handling shipments and deliveries.
Drove well
Great product, unfortunately I was very displeased with how it was delivered. The product was unwrapped and had the potential to be scratched up and chipped.
Nice pin box
> haven taken trip yet but i know there be a huge difference in the ride
Haven't installed pin box yet but it was delivered uncrated, and it looked like it was a used pin box.
Helps take the bumps out of our wonderful roads.
Switched from a ball. Glad I did. Very well pleased.
Great quality, great customer service - I’ll use E-trailer for everything I can now!
I received the pin box in good condition. Preparing to install. Much anticipation to get rid of present air ride hitch which is woefully inadequate.
The cardboard box the hitch was delivered in was damaged, hitch was not damaged. Curt could potentially package the hitch differently to protect the product and mitigate delivery damage.
Great service and fast shipping!! Great King pin . But wouldn’t fix my 5 wheel pin box.
Never received it got shipped out twice. Got damaged in shipping at the UPS facility. etrailer Customer Service worked with me great and refunding my money and apologize for getting damaged in shipping. It was not etrailer‘s fault. etrailer has a good customer service. I have bought several things from them. This is the only one that I had a problem with.
Do you have a question about this 5th Wheel Pin Box?
Info for this part was:
At etrailer 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.
Sierra K.
12/27/2021
Customer service will reach out to you. It is important to cover all bare metal with anti-corrosive paint to avoid rust. I have attached a help article regarding this.
Helpful Links
faq-rust-prevention-maintenance.aspx