Recommended MORryde GooseTech to Replace a Rhino Box on a 2026 Grand Design Solitude 370DV
Updated 03/05/2026 | Published 02/22/2026
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Question:
We have a GMC HD3500 Standard bed with factory puck system and have ordered a 2026 Grand Design Solitude 370DV which comes with the Moryde Independent Suspension. Because of the independent suspension, the rig comes with a 19,000 GVWR even though it has a UVW of 13,800. We would not anticipate ever having a loaded weight of over 17K. Several questions: - What would be the right GooseTech Pin Box for us? Could we get by with the MR87MV rated for up to 18K? - Have you heard how the clearance is with the GooseTech on a 2026 Solitude with a GMC standard bed with puck system? Thanks!
asked by: Stan R
Expert Reply:
Hey Stan, congrats on the new trailer. I checked with Grand Design and it looks like your Solitude 370DV has a Rhino pin box. To upgrade it to a MORryde GooseTech you'll need item # MR24MV. The next closest option capacity wise is item # MR74MV which tops out at 14,000 lbs.
None of the part numbers you referenced will replace a Rhino Pin Box.
You will also need the Safety Chain with 2 Hooks item # GY49GR. Safety chains are required for gooseneck connections and they are not included with the pin boxes. These will attach to that cross looking cutout by the MORryde logo.
None of the gooseneck 5th wheel adapters like the MORryde GooseTech item # MR24MV help with turning clearance. They're comparable in size to a standard pin box.
What year is your Sierra 3500? We have some offset gooseneck balls that fit the GM factory puck systems that'll help with turning.
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Product Page this Question was Asked From
MORryde GooseTech 5th Wheel to Gooseneck Pin Box for 18K+ Trailers w/ Lippert Rhino
- 5th Wheel Gooseneck Adapter
- Adapts Trailer
- 5th Wheel Trailer to Gooseneck Hitch
- No Extra Clearance
- 24000 lbs
- Replaces Pin Box
- Shock Absorbing
- Lippert Rhino
- MORryde
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Stan R.
3/3/2026
My GMC Sierra HD3500 is a 2025 model year. Thanks for tour assistance!