Replacement Gooseneck Pin Box for 2025 Alliance Paradigm 310RL
Updated 09/29/2025 | Published 09/14/2025
Question:
Which part number would be a direct replacement of the current curt helix pinbox on a 2025 Alliance Paradigm 310RL? Also, what is the true availability of the product? Lipper website shows these delivered within a week from today.
asked by: Mark B
Expert Reply:
Hello again Mark; are you saying your 2025 Alliance Paradigm 310RL currently has a regular Curt Helux pin box with a king pin? All of those have the Lippert Rhino Bolt pattern, which is the same for the Curt Helux 5th Wheel to Gooseneck Shock-Absorbing Pin Box Adapter. Looking at your pin weight the # C44HB is the correct replacement. Right now it looks like November for availability but with Lippert it could be sooner, could be later. Their shipping changes all the time, especially with new products.
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Product Page this Question was Asked From
Curt Helux 5th Wheel to Gooseneck Shock-Absorbing Pin Box Adapter - 20K GTW - 4,300 lbs TW
- 5th Wheel Gooseneck Adapter
- Adapts Trailer
- 5th Wheel Trailer to Gooseneck Hitch
- No Extra Clearance
- 20000 lbs
- Replaces Pin Box
- Shock Absorbing
- Lippert Rhino
- CURT
more information >
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Robin H.
9/29/2025
Hi Mark, did you find that the Curt Helux pin box adapter was the right fit for your 2025 Alliance Paradigm 310RL? I'm asking because your experience could help others who are trying to find the right replacement.