Correct MORryde GooseTech For 5th Wheel With Lippert 1621 Under 11.5K GVWR
Updated 10/19/2026 | Published 10/16/2026
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Question:
I believe this model MR57MV is the one I would be purchasing, but just hoping to get verification. I have a 21’ keystone cougar 29mbs.
asked by: Jeff H
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Expert Reply:
Hey Jeff! I reached out to Lippert and you have a 1621 bolt pattern on your 2021 Keystone Cougar 29MBS. Since your GVWR is under 11.5k the MORryde GooseTech # MR57MV is the correct replacement for your trailer. You will also need safety chains # MR23MV to complete your setup. If you want to keep it secure, the InfiniteRule Lock # IR66FR is available as well.
Where are you headed next with the Cougar once you upgrade your pin box?
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Product Page this Question was Asked From
MORryde GooseTech 5th Wheel to Gooseneck Pin Box for Trailers Under 11.5K w/ Lippert 1621
- 5th Wheel Gooseneck Adapter
- Adapts Trailer
- 5th Wheel Trailer to Gooseneck Hitch
- No Extra Clearance
- 24000 lbs
- Replaces Pin Box
- Shock Absorbing
- Lippert 1621
- MORryde
more information >
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