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

Question

Question:

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

asked by: Jeff K

0

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

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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!

Reply

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.

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Jeff

3/1/2024

@JonG Thank you, this is very helpful!!

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Jon G.

3/1/2024

@Jeff Happy to help out!

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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

Reply

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.

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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

Reply

Jon G.

7/21/2024

@Jeff Yes, it will work great!

Reply

Answer 1

Because it's lighter, less expensive, has fewer moving parts and is mechanically less complicated I'd recommend going with the Gen-Y #325-GH-8040 shock absorbing pin box versus a Trailair Flex Air like part #LC328492. The Trailair features a…

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Answer 2

Hey Bob! The Chill Cubes like item #LC22BX do not have a heat pump. This may change upon their release but as of 11/18/2024 the answer to that question is going to be no. There's a couple of different options of the Chill Cube as far as ducted…

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Answer 3

You can use an Air Ride like #LC158778 with the with the Andersen Ultimate Connection 5th Wheel Trailer Hitch System with Adapter #AM3200, or for a Trailair Rota-Flex pin box like #LC328330 it would need a lockout kit from Andersen in order for it to…

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Answer 4

A gooseneck adapter cannot be used with the Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 21,000 lbs #LC328329 because of the excess play and movement that would be present at the connection point. You would instead need to swap out your…

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Answer 5

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Answer 6

Yes, a Gen-Y pin box, like part #325-GH-8040 you're looking at, is compatible with the Demco Hijacker Autoslide 5th wheel hitch as long as you use the Capture Plate #GY98FR. The Gen-Y pin boxes are specific on what they are replacements for,…

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Answer 7

Choosing the right height setting for your 5th wheel hitch is a combination of a few different variables. First of all you want your towing setup to be as level as possible. With your Montana High Country 340BH level you will want to measure from the…

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Answer 8

The Ford Super Duty Prep Package is different from the Ram Prep Package so in order to reuse your B&W Companion OEM 5th-Wheel Hitch part #BWRVK3600 you will need to swap out the base with the Replacement Base for B&W Companion OEM 5th Wheel…

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Answer 9

To best combat chucking, between a MORryde and Rota-Flex pin box, the best option to replace your Lippert 1621 is the Rota-Flex, with the correct part number being the following: - Trailair Rota-Flex 5th Wheel Pin Box #LC328330 While no pin box is…

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Answer 10

Most standard pin boxes will not make a 90 degree turn in anything less than an 8 foot truck bed, but that is due to being too close to the cab - not the rails. You mentioned you wanted to replace the Rota-Flex with the Gen-Y hitch. Your old pin box…

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Answer 11

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 12

The bolts that attach the adapter to the king pin are through bolts, meaning if one broke the nut and other half of the bolt should be lying in the pin box. If you are able to make your way to a hardware store you can get a 1/2 inch grade 8 bolt, 1/2…

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

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