Recommended Pin Box For A 2022 Grand Design Momentum 351MS With A Lippert Rhino Box

Question

Question:

Just to be sure are fifthwheel is 18000 Gvwr because the 8000 axles option and Brake Disc , do you steal keep the Morryde MR83QR ? Or go to MR55QR ? Thank's

asked by: Marc B

0

Expert Reply:

The Rhinobox was definitely an unpopular choice for manufacturers to go with so swapping it out with the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino # MR55QR would definitely give you a major improvement in ride quality.

That being said, a 2022 Grand Design Momentum 351MS has a GVWR of 16,800lbs so you would want to use the MORryde Cushioned 5th Wheel Pin Box for 14K to 18K Trailers w/ Lippert Rhino # MR83QR instead. The internal spring for this pin box is the appropriate range for your RV's GVWR, which will give you optimal ride quality, whereas the # MR55QR you were looking at is designed for a heavier trailer.

The Curt Flex Air 5th Wheel Pin Box # LC65VR that Lippert tried recommending is also a great choice though. This pin box will give you more support if you're experiencing a lot of up-and-down motion, unlike the # MR83QR. It's quite a bit more expensive but it is going to do a better job because of the internal air bag, which allows you to fine tune your ride by raising or lowering the psi in the bag.

If you experience a lot of up-and-down motion or drive on really rough roads then I recommend the # LC65VR. If you're experiencing more front-to-back motion and don't want to spend a fortune then the # MR83QR is more than enough.

expert reply by: Kevin C

0

Manon

1/26/2023

Just to be sure are fifthwheel is 18000 Gvwr because the 8000 axles option and Brake Disc , do you steal keep the Morryde MR83QR ? Or go to MR55QR ? Thank's

Reply

Kevin C.

1/26/2023

If the GVWR of your trailer really is 18k you would still fall within the 14K to 18K range of the # MR83QR. I recommend double-checking the GVWR just to clear up any confusion. There should be a sticker around the front of the driver's side of the trailer with this number listed. The GVWR is the fully loaded weight of the trailer so you most likely will be well under that weight unless you're really loading it up with items and hauling with a full fresh water tank and full propane tanks.

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Answer 1

I have some great options for you to help with carrying extra cargo on the rear of your Grand Design Momentum. The best option as you mentioned is with a trailer hitch, the Adjustable Width Trailer Hitch Receiver for RVs part #13703 is what I…

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Answer 2

If you need an axle replacement because one is damaged, you will be fine sticking with the 7,000 lb axles you currently have. All you would need to do is get the hub face to hub face measurement to choose the right axle length. We have 94"…

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Answer 3

Thank you for the details! The Road Armor line doesn't really have anything that matches up so we'll want to look at the MORryde and Dexter Axle options. For the MORryde we have the kit #MR27ZR which is a little longer and lower but will…

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Answer 4

For a 17,000 lb trailer for which I am assuming is dry weight, I would error on the side of caution and use a 5th wheel hitch rated for at least 20,000 lbs. For a 20,000 lb 5th wheel hitch, I recommend the Curt Q20 5th Wheel Trailer Hitch part…

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Answer 5

Thank you so much for the pictures! That is exactly what I need. Your 2023 Solitude 2930RL has what's called a Lippert Rhino pin box. The Rhino Box, like the Lippert 1621 you mentioned, is a specific bolt pattern and to replace it with a MORryde…

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Answer 6

The Trailair Rota-Flex 5th Wheel Pin Box #LC328329 you linked to is a fit for the 1621 bolt pattern pin boxes so it will not fit your Lippert Rhino Box, but you have three other options that will. The first option is the MORryde Cushioned 5th Wheel…

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Answer 7

Yes, you can install the Firestone Ride-Rite Air Helper Springs #F2613 on your 2022 Chevrolet Silverado 2500HD with the Curt Q20 5th Wheel Trailer Hitch #C16130. The Curt Custom Fifth Wheel Installation Kit #C16429-204 will use different mounting…

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Answer 8

According to Lippert you will need the Curt Flex Air 5th Wheel Pin Box #LC328492 to replace the Curt Rota-Flex pin box on your 2022 Alliance Paradigm 310RL 5th wheel. They said you will have the 1621 bolt pattern for your mounting bolts.

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Answer 9

Yes, the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino #MR55QR is going to be a compatible replacement for your Lippert Rhino pin box. You also picked out the correct one for your GVWR as well so you were definitely on…

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Answer 10

The best air bag suspension enhancement for your 2019 Ram 2500 when towing a fifth wheel trailer are the the Firestone Ride-Rite Air Helper Springs #F2598 because they are the strongest, most durable air bags available which provide you with optimal…

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Answer 11

You'll be able to connect your Weber Traveler Grill directly to that quick-disconnect fitting using a hose like the MB Sturgis #100476-120-MBS as long as your grill doesn't have a regulator. If it does have a regulator then you need a tee…

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Answer 12

It sounds like you're trying to replace the Lippert Rhino Box Pin box on your 2021 Cedar Creek 31IK, and to replace a RhinoBox you can use the MORryde Cushioned 5th Wheel Pin Box #MR55QR, which is designed to replace a Lippert Rhino Box 21k. If…

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Recommended Pin Box For A 2022 Grand Design Momentum 351MS With A Lippert Rhino Box

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