Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box for 2020 Grand Design Momentum 350G
Updated 10/23/2025 | Published 10/21/2025
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Question:
Hello, I have a 2020 Grand Design momentum 350G Toy Hauler. Im looking at replacing the Lippert Pin box with a Gen Y Executive 5th Wheel King Pin Box. I am looking for a recommendation as to which Gen Y Pin Box part Number I need. Ive included a picture of the Lippert Tag. The Lippert Tag Info: S/N: S004041772 LCI Item Number: 762440 Thank You for any help. Willie
asked by: William P
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Expert Reply:
Hey Willie! Thanks for the picture. The pin box on your 2020 Grand Design Momentum 350G has a 1621 bolt pattern. It looks like your GVWR is 16,800 lbs so you want the 6.5k TW model # GY95GR.
Any big trips coming up with your toy hauler before winter sets in?
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Product Page this Question was Asked From
Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Lippert 1621/1621HD - 30K - 4.5K TW
- 5th Wheel Pin Box
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 30000 lbs
- Torsion Suspension
- Fixed Turret
- Lippert 1621
- Lippert 1621HD
- Gen-Y Hitch
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William P.
10/23/2025
Hi Robin, Thanks for the reply. My trailer's pin weight is 2600lbs. Based on that I thought I needed the 4.5k Model?