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  1. Fifth Wheel King Pin
  2. MORryde
  3. Lippert Rhino
  4. 24000 lbs GTW
  5. Upgraded Pin Box
  6. Reduces Chucking
MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino

MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino

Item # MR55QR
Retail:$899.99
Our Price: $799.99
You Save: $100.00
Fifth Wheel King Pin
Shipping Weight: 165 lbs
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Upgrade the factory pin box on your fifth-wheel trailer to this cushioned model that dampens road shock and reduces back-and-forth chucking for a more relaxed towing experience. Unlike air bags, the internal rubber spring requires no maintenance. 1-800-940-8924 to order MORryde fifth wheel king pin part number MR55QR or order online at etrailer.com. Free expert support on all MORryde products. Great prices and Fastest Shipping for MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino. Fifth Wheel King Pin reviews from real customers.
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  • Reviews (140)
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MORryde Fifth Wheel King Pin - MR55QR

  • Lippert Rhino
  • 24000 lbs GTW
  • Upgraded Pin Box
  • MORryde
  • Reduces Chucking
  • Fixed Turret

Upgrade the factory pin box on your fifth-wheel trailer to this cushioned model that dampens road shock and reduces back-and-forth chucking for a more relaxed towing experience. Unlike air bags, the internal rubber spring requires no maintenance.


Features:

  • Cushioned pin box replaces your factory model for a smoother towing experience
    • Provides a more relaxed and comfortable ride when hauling your trailer
    • Limits the stress put on your trailer during long road trips
  • Rubber shear spring absorbs and dampens road shock and vibration
    • Reduces back-and-forth chucking while towing over uneven roads
    • Helps eliminate jerking when starting and stopping
    • Requires no maintenance, unlike internal air bags
  • Internal glide pads allow the skid plate to shift forward and backward and side to side
    • Allows for smoother maneuvering
    • Also helps to reduce chucking
  • Bolt-on installation no drilling required
    • King pin sits in same location as factory king pin
  • Made in the USA


Specs:

  • Application: 5th-wheel trailers with over 18,000-lb GVWR (maximum loaded weight)
    • Designed to replace Lippert Rhino pin box
  • Pin box weight capacity: 24,000 lbs
    • Do not exceed the GVWR that is listed in your trailer's manual
  • Spring capacity (for optimal ride): 18,001 lbs - 21,000 lbs
  • Fore-and-aft movement of skid plate: up to 3"
  • Side-to-side movement of skid plate: up to 1-1/2"
  • 3-Year limited warranty (or 70,000 miles)


Rubber Shear Spring Absorbs and Dampens Road Shock

Most standard pin boxes are constructed of steel and are built with the sole purpose of connecting your fifth-wheel trailer to your tow vehicle. There is no cushioning built in, so a factory pin box doesn't do anything to provide a comfortable ride when you're hauling your fifth-wheel trailer.


This MORryde pin box, however, is built with an internal rubber spring that absorbs road shock and vibration at the connection point. So if you're driving on unpaved roads or uneven pavement, this pin box will prevent any road shock and vibration you encounter from transferring from your tow vehicle to your fifth-wheel trailer and vice versa. In other words, the rubber spring takes the brunt of the impact so you and your towing setup don't have to. And because this unit uses a rubber spring instead of an internal air bag like some other upgraded pin boxes, there's no maintenance required.


The internal rubber shear spring is optimized for trailers that range from 18,001 lbs to 21,000 lbs to ensure that it provides just the right amount of shock absorption for your application. If this pin box were to be used on a larger trailer, the spring would be too stiff to provide enough cushion. And if your trailer's GVWR was less than 18,000 lbs, then the spring would be too flexible to provide adequate support.


Less Chucking for a Better Ride

Chucking, the back-and-forth jerking movement you feel in your cab when towing, occurs most frequently during starts and stops and while making turns. A typical, factory pin box creates a rigid connection without much give. So when a harsh stop occurs, all of the trailer's forward momentum gets forced through that stiff connection, slamming the king pin in the hitch and jerking your truck around.


To combat this, glide pads are built into the MORryde pin box that allow the skid plate to shift up to 3" forward and backward and 1-1/2" side to side to compensate for some of that violent motion so that you don't have to feel it in your cab.


Bolt-On Installation

How To Install MORryde Pin Box

This MORryde pin box is a direct replacement for your existing Lippert Rhino pin box, so the installation is very straightforward. After removing your old pin box, the MORryde can be mounted into place using the same hardware and bolt holes used by the factory pin box.


MORryde Pin Box Bolt-On Installation

Because of the weight of the unit, you'll want a couple of friends to help you lift it into place during installation. Once the hardware is securely bolted down, you'll be ready to go.



RPB77-RHINO-06 More Ride Fifth Wheel Rubber Pin Box Replacement for Lippert Rhino - Over 18,000 lbs GVWR

Installation Details MR55QR Installation instructionsAlternate Instructions MR55QR Installation instructions



Customer Satisfaction Score:


Customer Reviews

MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino - MR55QR

Average Customer Rating:  4.8 out of 5 stars   (140 Customer Reviews)

Upgrade the factory pin box on your fifth-wheel trailer to this cushioned model that dampens road shock and reduces back-and-forth chucking for a more relaxed towing experience. Unlike air bags, the internal rubber spring requires no maintenance.

by:

After talking to your customer support staff and picking out the right pin box, I ordered it the next day on line. Shipping was fast and it arrived in good shape. The Pin box came with all the bolts and Hardware, it took about an hour to install on my 2024 Momentum M class RV. I took it for a 2-hour road trip and you cannot believe the difference in the ride. I am never disappointed when I deal with etrailer.



by:

All was good except it was short on hardware. 8 bolts, 10 washer 5 nuts, 6 lock washers. I needed 10 of everything. Rino box's have 6 bolt that go into welded nuts and only 4 bolts with nuts. Even using those I'm still two short. 50 miles to a hardware store in search of 3/4 nuts.
Sad day.

Etrailer Expert

Jenny N.

1/27/2023

A sad day indeed. Missing hardware is never fun. I will have our Customer Service team reach out to you as quickly as possible.



by:

just had it installed works great and looks good



by:

The pin box was delivered on time, it’s a pin box, and I have not installed it yet. But it’s performance, or quality, or lack of either, would be a reflection on MoRyde not etrailer. Delivery was on time and the etrailer staff had answered my questions prior to ordering in a prompt manner.



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I have not installed this part on my 2021 momentum 395MSR yet, but it was received in perfect condition. I had the same pin box on my Solitude390RKR and loved the way it handled. If the part does not perform as expected once installed and after I have some miles behind it i'll update my review.



by:

This cushioned pin box is definitely worth the upgrade. Chucking is greatly reduced (There's no getting totally away from it) and the frequency of the chucking is tempered making the ride much more pleasant. There are times when you forget your towing it's so smooth on decent stretches of road. Delivery was quick (3 days early as a matter of fact) and driver dropped it in my garage. Plus the fitment was perfect, bolted on with no problem. Entire experience was good !!



by:

Fit perfect on my Grand Design Reflection 303RLS. Will be taking a long trip very soon and will let you know how it performs.



by:

The hitch is great. The fact that etrailer only offered one shipping method was disappointing. Upon placing the order, requested a faster more reliable shipping method. This was not an option. The item arrived the Thursday after the estimated Monday delivery. Tracking proved that the item sat in warehouse depots for 11 of the 14 shipping days. This was very frustrating.



by:

After talking with a couple of the sales raps, we were able to obtain the right product. It was shipped it was delivered on time. We picked it up at will call installed it a few hours later with no trouble at all. We would recommend etrailers and this product to anyone.



by:

Installation instructions were very good! It fits perfectly.
Beware when ordering a part this heavy, the shipper only delivers to the curb.



by:

(Mrs. Brinkley) Our New Brinkley Z2900 couldn't be happier with Her new Pin Box from MORyde, the Chucking is a lot less noticeable and my F350 doesn't have to take the punishment either. Thank you etrailer and your support in helping me find the appropriate pin box need in our application. hope this helps others with the he most obvious decision if they want to improve their ride.



by:

The king pin box was delivered in perfect shape. Metal banded, strapped to a wood pallet in a card board box. Upon installation it fit perfect.
The customer support was excellent throughout the whole process from the ordering, making sure the correct king pin box was selected, to follow up, due to the long wait. The long wait was due to Covid 19. I am a happy camper and cannot wait to try it out on the road soon. I will send a follow up review. Thanks etrailer and especially Christina J. she answered all my questions and followed up on time every time.



by:

This is an excellent pinbox and hopefully I’m saving some wear and tear on my trailer. We have a Superglide auto slide hitch and the Morryde adapter sure beats the capture plate I had before. No more chancing a broken foot when it accidentally falls off.



by:

Towing our 36' toy hauler with this pin box is much less jarring than the original pin box. It definitely isolated the movement of the trailer from the truck.



by:

Freaky fast delivery!! Lol you must be eating jimmy John's.
I can confirm it fits a 2010 jayco eagle. 351 rlsa.
Although it's a 11k to just uner 15k gross the 14k to 18k rating shuld do well.
Thanks for the chat input in researching my choices.



by:

Love the new pin box. It has performed as advertised and provides a much smoother ride!


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Show More Reviews

See what our Experts say about this MORryde Fifth Wheel King Pin

  • Will MORryde Cushioned Pin Box Fit Grand Design Momentum 395MS With Lippert Rhino
    Yes, the MORryde Cushioned 5th Wheel Pin Box # MR55QR will fit your Grand Design Momentum 395MS. The MORryde is designed to replace the Lippert Rhino and will significantly improve your ride quality. It is for 5th wheel trailers with a GVWR over 18,000 lbs and it looks like your GVWR is 20,000 lbs so this is the correct model. I have attached an installation video below for your reference.
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  • MORryde Cushioned Pin Box Replacement For Lippert Rhino Pin Box 18k - 21k
    We sure do! What you are needing is the MORryde cushioned pin box replacement for the Lippert Rhino, and the part number RPB77-FD-06 is for 18,000 lb to 21,000 lb trailers. The pin box you are looking for is the following: - MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino # MR55QR The # MR55QR is a really nice choice because its rubber spring is going to absorb shock and dampen vibration, which will help give you a much smoother, quieter ride while you tow.
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  • MORryde Cushioned Pin Box For 2024 Brinkley Model Z 3610 w/ Lippert Rhino Pin Box
    Hey Jeff, appreciate all the details you provided that was super helpful and we do have the MORryde cushioned pin box that is designed to replace a Lippert Rhino pin box. For the 17,695 lb GVWR you mentioned on the 2024 Brinkley Model Z 3610, what you need is the following: - MORryde Cushioned 5th Wheel Pin Box for 14K to 18K Trailers w/ Lippert Rhino # MR83QR Definitely a smart idea to go with a cushioned pin box, as standard pin boxes just ride too rough. Frankly, I think cushioned...
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  • Recommended Replacement for a 21K Rhino Box Pin Box
    Hey Joseph, you're going to want the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino # MR55QR. This pin box is designed to replace your Rhino Box pin box, has a weight capacity of 24,000 lbs, and has an easy bolt on install - so there'll be no drilling required.
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  • Length Measurement For The MORryde Cushioned Pin Box Replacement For Lippert Rhino Box
    The MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino # MR55QR has a 13.27" measurement from the center of the king pin to the center of the first bolt holes. This pin box has a Lippert Rhino bolt pattern so you'll need to have the same pattern for this to be compatible. MORryde also makes a few different options with these pin boxes to optimize ride quality, so you'll want to choose your replacement pin box based on the GVWR of your trailer. 11k-14k # MR44HR...
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  • Replacement Pin Box for Lippert Rhino Box 21k on 2021 Cedar Creek 31IK
    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 you've got a different style pin box, please let me know what the model number found on the spec sticker is and I can help you locate an appropriate replacement.
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  • Compatible Pin Box Replacement For A 2024 Brinkley Model Z 3100 With A Lippert Rhino Pin Box
    With the GVWR of your 2024 Brinkley MODEL Z 3100 5th wheel being 14,995lbs the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino # MR55QR would be a compatible fit, but give you a bad ride quality because the shear spring is designed for a GVWR of 18,000-21,000lbs. With yours being so much lower the spring would give you a stiffer ride, essentially negating the benefit of the spring. There is the MORryde Cushioned 5th Wheel Pin Box for 11K to 14K Trailers w/...
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  • MORryde Pin Box Replacement For Lippert Rhino Pin Box
    Emailed for pin box model
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  • Recommended MORryde Pin Box to Replace a Lippert Rhino Box
    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 pin box you will want item # MR55QR. The MORryde Cushioned 5th Wheel Pin Box item # MR55QR is rated for 5th wheel trailer's weighing between 18,000 lbs and 21,000 lbs. The Lippert Rhino Box currently on your Grand Design has a 21,000 lbs capacity...
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  • Recommended Pin Box For A 2022 Grand Design Momentum 351MS With A Lippert Rhino Box
    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...
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  • Will MORryde Custioned Pin Box For Lippert Rhino Pin Box Add Length
    There isn't a Rota-Flex for the Rhino, but there are MORryde cushioned pin boxes. That said, they won't add any length, they'll just improve your ride compared to the standard pin box. If that's okay go with the right one for your trailer size, the MORryde Cushioned 5th Wheel Pin Box for 11K to 14K Trailers w/ Lippert Rhino # MR44HR, 14K to 18K Trailers w/ Lippert Rhino # MR83QR, or 18K to 21K Trailers w/ Lippert Rhino # MR55QR.
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  • Pin Box Upgrade Recommendation for Lippert Rhino Pin Box
    Thanks for the photos and information - that always makes things easier on our end! We do have a handful of replacement pin boxes that fit in place of your Lippert Rhino Pin Box. Since you don't think you'll want/need the air bag kit I recommend checking out the MORryde cushioned pin boxes as they do an amazing job at providing a comfortable ride quality, which you can see from the numerous great reviews both on our site and out in the camping community. You just need to choose which box...
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  • Recommended Replacement FOr A Lippert Rhino Box On A 2022 XLR Nitro 35DK5 Toy Hauler 5th Wheel
    The Lippert Rhino Box has it's own bolt pattern so the Lippert 1621SHD # LC1387882 would not be a compatible fit. Instead you'll want a pin box like the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino # MR55QR, which is a compatible replacement. MORyde has a few different versions of this pin box so you'll want to get your trailer weighed while loaded to see where you're sitting at to choose the correct spring capacity for the best ride quality. 11K to 14K...
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  • Will The MORryde Cushioned Pin Box Replace A Lippert Rhino Pin Box
    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 the right track. This pin box has rubber shocks that help reduce front to back chucking, which can be especially bad when starting to move or when you have to slam on the brakes. This will also help when you're rolling down uneven or bumpy...
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  • Curt Flex Air vs. MORryde to Replace Lippert Rhino Pin Box
    Sure thing, we can help guide you on the right choice to replace your Lippert Rhino pin box, and both options you mentioned can be right for you, but it depends on your situation and what you are looking for. We'll go over both, with the correct part numbers to replace the Rhino being the following: - Curt Flex Air 5th Wheel Pin Box # LC65VR - MORryde Cushioned 5th Wheel Pin Box # MR55QR So the bare bones difference is that the MORryde just has the rubber compound and pivoting (back...
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  • Length Of The Curt Flex Air 5th Wheel Pin Box # LC369535
    The distance from center of king pin to front row of bolt holes on the Curt Flex Air 5th Wheel Pin Box # LC369535 is 20-3/4". This would be a bit longer than the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino # MR55QR you were looking at and also has a different bolt pattern (1621), so you'll want to confirm the bolt pattern of your current pin box prior to purchasing a replacement.
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  • Can The Reese Airborne 5th Wheel Pin Box Replacement A Lippert Rhino Box
    Yes, the Reese 5th Airborne Premium Fifth Wheel Air Ride Coupler # RP78FR is compatible with the Lippert Rhino bolt pattern. This pin box features an air spring that you can use to fine tune your trailer's ride quality. Reese recommends starting at 15-20 psi and towing the trailer around to test the ride quality and just adding 5 psi each time until the ride quality is where you want it to be. This obviously could take some time to accomplish but is the most accurate way to find the right...
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  • Will Trailair Rota-Flex 5th Wheel Pin Boxes Fit a Rhino Box
    The Trailair Rota-Flex 5th Wheel Pin Boxes, # LC328330 and # LC328329 are replacement/upgrades for the Lippert 1621 or 1621HD pin boxes. These will not fit a Rhino Box. However, we do have the MORryde Cushioned 5th Wheel Pin Boxes, # MR44HR for 11K to 14K and the # MR55QR for 18K to 21K trailers w/ Lippert Rhino and the Curt Flex Air 5th Wheel Pin Box - Lippert Rhino - 21,000 lbs., # LC65VR.
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Do you have a question about this Fifth Wheel King Pin?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Kathleen M
Updated by:
Kathleen M
Employee Leah S
Updated by:
Leah S
Employee Wilson B
Updated by:
Wilson B
Employee David F
Video by:
David F
Employee Mike S
Written by:
Mike S
Employee Bradley B
Test Fit:
Bradley B

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