Choosing Between MORryde Cushioned Pin Box and Curt Flex Air for 2022 Grand Design Reflection 337RLS
Updated 08/28/2025 | Published 05/22/2025
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Question:
Hi etrailerI have a 2022 reflection 337 RLS.I want to replace my pin box with a Curt flex air or the Moryde hitch.Could you please let me know which hitch would perform better.Thank you.
asked by: Jeff B
Expert Reply:
Hey Jeff! Between the MORryde Cushioned 5th Wheel Pin Box # MR84VR and the Curt Flex Air # LC328492 the Curt is the better option. The Flex Air features the same rubber compound in the head but has the additional air bag so it is essentially an upgraded version of the MORryde.
Both of these will fit if you have a Lippert 1621 on your 2022 Grand Design Reflection 337RLS. If you aren't sure what the bolt pattern is, feel free to send me a picture of the pin box sticker and I can use that to identify your current pin box. If the sticker is missing you can check out the help article below which explains how to measure and identify your bolt pattern. Let me know if you need anything else.
(click to enlarge)
Jeff
7/29/2025
Hi Robin ,this is Jeff I just wanted to know your thoughts on the 21,000 of.Curt flex air pin box LC65VR for my Grand Design 337 RLS 5th wheel.Thanks.
Robin H.
7/29/2025
Robin H.
8/27/2025
Jeff B.
8/26/2025
Hi Robin,will a Curt Flex air pin box LC65VR replace a standard 1621 pin box.
Robin H.
8/27/2025
Product Page this Question was Asked From
MORryde Cushioned 5th Wheel Pin Box for 14K to 18K Trailers w/ Lippert 1621 and 1621HD
- 5th Wheel Pin Box
- Upgraded Pin Box
- Reduces Chucking
- 21000 lbs GTW
- Rubber Spring Suspension
- Fixed Turret
- Lippert 1621
- Lippert 1621HD
- MORryde
more information >
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on 5th Wheel Pin Box
Jeff B.
5/25/2025
Hey Robin H.,thanks for your help.I was leaning more towards the Curt flex air pin box.Your input helped me make that decision.Thanks again!