Correct MORryde Cushioned Pin Box for 2016 Jayco 321RSTS
Updated 11/12/2025 | Published 11/07/2025
Question:
Hi, I’m looking to replace my factory pin box with a MoRyde unit, I have a 2016 jayco 321 RSTS I’ve added a photo of my current box with parts numbers Can you please recommend which model with work. Thank you
asked by: Jeff D
(click to enlarge)
Expert Reply:
Hey Jeff! Thanks for providing the picture to help me identify your pin box. It isn't often they aren't sure, but according to Lippert it could be a 1621, an unspecified MORryde, or a Reese Revolution. If it doesn't rotate we know it isn't the Revolution and I think we can rule out the MORryde as well. The 1621 will be 12" wide (G in the picture below) and have two rows of bolts if you want to double check.
It looks like the GVWR on your 2016 Jayco 321RSTS is 12,500 lbs so assuming it is the 1621 you need the MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621 and 1621HD # MR74VR.
(click to enlarge)
Product Page this Question was Asked From
MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621 and 1621HD
- 5th Wheel Pin Box
- Upgraded Pin Box
- Reduces Chucking
- 21000 lbs
- Rubber Spring Suspension
- Fixed Turret
- Lippert 1621
- Lippert 1621HD
- MORryde
more information >
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Jeff D.
11/11/2025
Hi Robin, thank you for the quick response and you are correct its not the revolution the pic you provided is exactly what I have on the unit. great info and know I know which one to order... Happy Trails JD