Comparing Rota-Flex and Gen-Y 5th Wheel Pin Boxes

Updated 07/21/2024 | Published 02/29/2024

Question:

How does the GenY compare to the Roto Flex by trailair?

asked by: Jeff K

Rota-Flex Pin Box Profile
(click to enlarge)

Expert Reply:

Great question, Jeff!

When the Rota-Flex first came out it renovated what a pin box could do and be, but at this point in time that technology is a little more dated and the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box # 325-GH-8040 is the "new kid on the block" so it is definitely an upgrade to what you currently have, and you'll be happy with it for sure.

The part number mentioned above will fit in place of a Lippert 1621 or 1621HD pin box and is great for a calculated tongue weight in the 1,501-3,000 lbs range. To find your calculated tongue weight you need to take the GVWR of your trailer and multiply it by 0.22 - if it falls within the range mentioned above then this Gen-Y pin box is what you need.

expert reply by: Jon G

Gen-Y Executive Pin Box Tongue Weight Specs Diagram
(click to enlarge)

Jeff K.

3/1/2024

Hi Jon, My 376TH has a 20k GVWR, does GenY make a hitch in these parameters? Also, will a 20k Reese hitch be adequate to pull this camper? Thanks!

Jon G.

3/1/2024

@JeffK Thanks for the follow ups! Your 20K GVWR does mean you have a 4,400 lb calculated tongue weight, and while this does look to correlate to the part # GY68GR, Gen-Y has a chart that I've gone back and attached to my initial answer that shows they actually say you need the next size up with part # GY46FR - sorry for any confusion! When it comes to the weight capacity of a 5th wheel hitch I always recommend having a little cushion because if you were to load your 5th wheel up to max capacity then you'll be pushing the hitch to it's max capability. At the very least I recommend using the Curt A25 # C16180, but for something a little nicer I really like the Curt PowerRide # C22ER because it has an even higher weight rating (for future-proofing) and is just a nicer hitch overall in both function and performance.

Jeff

3/1/2024

@JonG Thank you, this is very helpful!!

Jon G.

3/1/2024

@Jeff Happy to help out!

See All (5) Replies to Jeff K. ∨

Jeff

7/14/2024

Jon, I have a question on another subject. Currently I pull a fifth wheel having a GVWR of 17,000lbs with a Curt Q20 with an F350 6.7L turbo diesel single rear wheel 4x4. I'm purchasing a new fifth wheel which has a GVWR of 22,000lbs and hitch weight of 3,200lbs, so I need to go to a Curt Q25 hitch. Are there modifications to the 20 which will bring it up to a 25 or do I need to buy a new hitch? Thanks, JeffH

Jon G.

7/14/2024

@Jeff Thanks for reaching back out! The Q20 is only rated for up to 20,000 lbs so there unfortunately isn't a way to swap out parts and increase the weight rating - you'll have to go with a whole new Q25 # C16265 for standard base rails or the Q25 # C16039 if your F-350 has the factory puck system.

Jeff

7/15/2024

@JonG Ok. Will my base rails work with the Q25? They are bolted and welded to the frame. If I have to go with a new hitch, what are a few of the latest and greatest 25k rated hitches? Thanks Jeff