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 or 1621HD pin boxes.
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The Rota-Flex pin box has a pivoting head and built-in rubber compound that help to reduce chucking 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 or 1621HD 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.
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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
Looks and works great. Easy install
Haven't installed pin box yet but it was delivered uncrated, and it looked like it was a used pin box.
It did what it was advertised to do.
Helps take the bumps out of our wonderful roads.
Great product, Installed and what difference the ride. Thanks SJ McDonnell
Switched from a ball. Glad I did. Very well pleased.
Works great eliminated the jaring. Also shorter so I can make a hard turn without touching the sides of my box
Great quality, great customer service - I’ll use E-trailer for everything I can now!
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.
Product was as ordered. Hat's off to etrailer. After UPS lost the first one, etrailer expedited its replacement
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 hitch arrived poorly packaged in a cardboard box. The hitch is very heavy. It was scratched and required repainting.
The hitch itself looks well made and strong.
Great service and fast shipping!! Great King pin . But wouldn’t fix my 5 wheel pin box.
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