Will the Gen-Y 5th Wheel to Gooseneck Pin Box # GY72SB Fit a 2023 GD Momentum 395MS?
Updated 08/20/2026 | Published 08/13/2026
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Question:
Will the Gen-Y 5th wheel to gooseneck hitch GY72SB replace a Lippert Rhino pin box on a 2023 Momentum 395MS?
asked by: Randy A
Expert Reply:
Hi Randy,
The Gen-Y 5th Wheel to Gooseneck Pin Box part # GY72SB won't fit your 2023 Grand Design Momentum 395MS because it is specifically made for Brinkley trailers. The # GY72SB has a specialized physical profile custom-engineered to clear the fiberglass front cap moldings on Brinkleys.
Instead, you'll need the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box part # GY33GR. The # GY33GR is rated for 24K with a tongue weight of 4,500lbs. It's more highly rated than your Lippert Rhino, however, even with a higher rated hitch you'll be limited by the GVWR of your trailer. The built-in torsion system with absorb any chucking and bounce, so they'll be less stress on your truck and trailer and give you a much smoother ride.
What do you usually carry in the garage of your toy hauler?
Product Page this Question was Asked From
Gen-Y Hitch 5th Wheel to Gooseneck Pin Box for Brinkley RVs - Lippert Rhino - 24K GTW - 4.5K TW
- 5th Wheel Gooseneck Adapter
- Adapts Trailer
- 5th Wheel Trailer to Gooseneck Hitch
- No Extra Clearance
- 24000 lbs
- Replaces Pin Box
- Shock Absorbing
- Lippert Rhino
- Gen-Y Hitch
more information >
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Randy A.
8/19/2026
I usually carry a golf cart probably under 1000 lbs and sometimes the Harley under 1000 lbs