What Reese Goose Box Do I Need for My 2021 Grand Design Solitude 3740BH?  

The Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box #GY68GR is roughly 2" shorter than the Lippert 1621 pin box. I've attached a dimensional drawing of #GY68GR for you to check out as well.

For your 2020 Grand Design Solitude 310GK you will need the Gen-Y Hitch 5th Wheel to Gooseneck Pin Box #GY58GR. This will bolt to the 1621 pin box bolt pattern you have on your Solitude. You will need the Safety Chain #GY49GR as all ball trailer…

Thanks for all of the pictures! That is exactly the information I needed. To replace the Rhino Box on your 2023 Grand Designs Momentum, I recommend the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box item #GY23GR. This gooseneck adapter…

The Gen-Y Hitch 5th Wheel to Gooseneck Pin Box part #GY58GR is primarily designed for long bed trucks. It's no different than a standard fifth wheel pin box in regards to the size. If you were using a fixed hitch and standard pin box before with…

Yes, the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter #RP85FR will replace the 1621 MORryde pin box that came on your 2020 Grand Design Solitude 377MBS. I do recommend double checking the sticker that is on the MORryde pin box for…

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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…

Hi James, To my knowledge the Reese Goosebox is the only replacement option that won't void the frame warranty. That being said, the frame warranty is typically only a year so you really aren't losing much voiding it, especially if you've…

Hey Mark, Nope, your long bed GMC Sierra 3500 won't require the use of an offset gooseneck hitch ball with the Gen-Y Hitch 5th Wheel to Gooseneck Pin Box #GY58GR. With the gooseneck prep package you can use a standard hitch ball, the B&W Ball…

Choosing the right height setting for your 5th wheel hitch is a combination of a few different variables. First of all you want your towing setup to be as level as possible. With your Montana High Country 340BH level you will want to measure from the…

Hi Vince, Gen-Y switched production to the newer Snap Latch in December 2023 so anything manufactured from January 2024 and forward would come with the new latch. This is a direct-ship item so you'd be getting it directly from the factory, which…