Review of Reese Fifth Wheel King Pin - Upgraded Pin Box - RP78FR Video

No, it does not but I have one that does. It is the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box item #GY86GR. This pin box is custom designed for the Lippert Rhino bolt pattern. It has an identical 21,000 lbs towing capacity and a 3,500 lbs…

We have the following Gen-Y shock absorbing 5th wheel pin boxes which are compatible with the Lippert Rhino pin box bolt pattern. The weights listed below are the maximum capacities the pin box is capable of supporting. 21,000 lbs - 3.5K TW #GY86GR…

Yes, the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino #MR55QR is going to be a compatible replacement for your Lippert Rhino pin box. You also picked out the correct one for your GVWR as well so you were definitely on…

The formula you used is only a guess and wouldn't be an accurate way to determine your trailer's actual pin weight since it's a triple axle toy hauler. The only way to get an accurate number would be to measure at highway weigh station.…

With the GVWR of your 2024 Brinkley MODEL Z 3100 5th wheel being 14,995lbs the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino #MR55QR would be a compatible fit, but give you a bad ride quality because the shear spring is…

The Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box #GY46FR you mentioned does give side to side movement. This hitch does have a shock absorbing design that ensures you have a smoother and steadier ride by reducing the fore and aft chucking. This…

The Reese 5th Airborne Premium Fifth Wheel Air Ride Coupler part #RP78FR is categorized as a long style pin box. The dimensions are designed to mirror that of the pin box it replaces which one that uses a Lippert 1621 pattern. Therefore, you…

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…

Thank you for the photos! I reached out to my contact at Lippert and they said your 5th wheel trailer is equipped with a model 1621 pin box so that's what you want with a Reese 5th Airborne: - 20K Reese 5th Airborne Premium Fifth Wheel Air Ride…

To confirm whether or not you have a Lippert 1621 pin box that the Curt Flex Air 5th Wheel Pin Box #LC369535 would replace, you need to look at the stickers on the side of the pin box for that "1621" number. If you can't find it or you…

The Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box part #GY86GR isn't designed to be any longer than the pin box it replaces. I have attached the dimensions below so you can be sure but if you couldn't make full turns before, odds are you…

That's a good question, and yes, the two are compatible. The type of gooseneck adapter that cannot be used with the Flex Air are adapters that attach to the pin box. So you can use the Companion with the Turnoverball rails and Flex Air set up.…