Recommended Goosebox to Replace a Curt Rota-Flex w/a Rhino Box Bolt Pattern

Published 10/21/2025

Products Featured in This Question

Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter - 20,000 lbs

(324)

$1656.81

Reese Safety Chain Kit with Clevis Hooks - 44" Long - 20,000 lbs - Qty 2

(123)

$82.94

Question:

what reese goosebox will replace a Curt Rota-Flex/pivoting head chassis MFG Date:09/28/21 RPO0007097514 S/N: S007666925 LCI Item 8128071 The camper is a Aliance Paradigm 310RL Thanks

asked by: Rodger O

Expert Reply:

Hey Roger, thanks for the information! I just spoke with Lippert and your Alliance Paradigm 310RL has a Rhino pin box. You will need the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter item # RP85FR. This goosebox has a 20,000 lbs capacity and will bolt right up to your 5th wheel trailer.

Please note you will also need the Safety Chain Kit with Clevis Hooks item # RP49151. Safety chains are required by law for gooseneck connections and they are not included with the Goosebox item # RP85FR.

expert reply by: Jerred H

Pin Box Sticker
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Rodger O.

10/21/2025

Thank you, much appreciated

Jerred H.

10/21/2025

@RodgerO You're welcome! Let me know if you have any additional questions.

Rodger O.

10/21/2025

@RodgerO what gen y pin box would fit my aliance 31rl paradigm

Jerred H.

10/21/2025

@RodgerO Since you have a Rhino Box, you'll need the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box item # GY33GR. You'll need the Safety Chain with 2 Hooks for Gen-Y 5th Wheel to Gooseneck Pin Box item # GY49GR for this pin box. I prefer the Gen-Y's over the Reese. There's less moving parts and you don't have to worry about air pressure. The Gen-y's have a system similar to torsion axles that really helps keep road shock from traveling through your pin box to your truck.

See All (5) Replies to Rodger O. ∨

Rodger O.

10/21/2025

Thank you for your time and info. You are much appreciated ??

Jerred H.

10/21/2025

@RodgerO You're welcome.

Rodger O.

10/21/2025

One more question, what bolt kit do I need for the Gen y GY33FR Thanks again

Jerred H.

10/21/2025

@RodgerO The Installation Bolt Kit for Gen-Y Hitch 5th Wheel Pin Boxes and 5th Wheel to Gooseneck Adapters item # GY86FR is exactly what you need if you do not want to reuse your existing hardware.