Will Curt Helux Cushioned Pin Box Fit 2020 Forest River Riverstone Legacy 39fkth
Updated 08/31/2026 | Published 08/13/2026
Question:
does the curt helux pin box work on a 2020 forest river riverstone legacy 39fkth?
asked by: Donald L
Expert Reply:
Hey Donald, there's a good chance the Curt Helux part # C73RJ does fit your 2020 Forest River Riverstone Legacy 39fkth but we need to determine what pin box you have now to be sure. You will need to make sure you have a Rhino pin box which to do that you will need to measure the distance between the horizontal mounting bolts of the pin box. If that distance is 7-1/2 inches you have a Rhino box like what this fits. If it's 7-7/8 inch you have a 1621 and would need to go a different route. Keep in mind the Helux only fits the Rhino pin boxes.
Product Page this Question was Asked From
Curt Helux Shock-Absorbing 5th Wheel Pin Box - Lippert Rhino - 24K GTW - 5,400 lbs TW
- 5th Wheel Pin Box
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 24000 lbs
- Rubber Spring Suspension
- Fixed Turret
- Lippert Rhino
- CURT
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Donald L.
8/26/2026
i did measure the bolt holes and it is 7 7/8ths. what other options do i have for a better pinbox and one that will give me more clearance from the bottom of the 5th wheel to the top of my bed rails. Right now I am at about 4 3/4" and i would like to be closer to about 6 to 7inches of clearance. I am using a Curt A25 5TH wheel hitch in the bed of my truck. My hitch is at the highest setting possible and I am not happy about that. thank you Donald