Hey Todd, welcome back! The Curt Flex Air part #LC369535 that you referenced will be a great option for a cushioned pin box that will make a noticeable difference in ride quality. This does not sit 6 inches taller than your current Rota Flex so there…
Hey Matt, I was able to track down a set of install instructions for the PullRite SuperGlide Quick Connect Capture Plate for MORryde Cushioned Pin Boxes #PUL76RR that I saw you ordered in your order notes. I attached the pictures below this message…
Hey Marc, the Lippert 1621 pin box is considered an extended pin box but it's essentially the standard pin box nowadays and doesn't extend past what you have now if you were looking for a way to upgrade. Are you wanting better turning…
Hey Tim, I did some digging and it looks like your Alliance 22ml would have the Rhino box style pin box on it currently so the correct MORryde cushioned pin box replacement would be the part #MR45ER. Below you can see a customer of ours confirms that…
Hello Charles, thanks for reaching out. Adding a cushioned pin box like the MORryde #MR64VR will help to reduce some of the chucking and jerking. We will just need to determine the size/bolt pattern of the pin box currently on your camper. There is…
All the MORryde Cushioned 5th Wheel Pin Boxes #MR57VR, #MR37VR and #MR97VR will share the same dimensions and are nearly identical to the Lippert 1716 5th Wheel Pin Box #LC1324791. I have attached a technical drawing for the MORryde pin boxes similar…
I spoke with my contact at Trailair and from your serial number we were able to determine that your trailer came with a 1621 HD pin box which is a long pin box style. I was unable to obtain the exact part number for your Trailair pin box but from the…
We've spoken with Trailair in the past about this exact question and the Rota-Flex part #LC328330 is going to sit right at 1 inch lower than the 1621 pin box you have currently.
I went to our warehouse and measured the holes you mentioned you wanted the measurement for on the Lippert 1621 5th Wheel Pin Box, part #LC1387882. The holes measure 3/8 inch diameter. I have also attached a drawing of this pin box with the…
Hey Steve! The PullRite SuperGlide #PUL83RR will not contact the tailgate on your 2025 GMC Sierra 2500. They have tested this extensively and said making contact and causing damage is not a concern. This is a really great hitch and autoslide is the…
The information you provided is perfect! The weight rating and the "1621" number you found is exactly what I'd need to know to confirm replacement pin box options. The Lippert options we have include the Rota-Flex #LC328330 and the…
Installation of a replacement pin box like the Lippert 1621 5th Wheel Pin Box - 18,000 lbs #LC1191151 does not raise the overall height of a 5th wheel trailer, but it may give more adjustability to the height of the king pin. I've attached an…
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