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  1. 5th Wheel Pin Box
  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

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

Part Number: MR55QR
In Stock
$799.99
Retail:$899.99
You Save: $100.00
5th Wheel Pin Box
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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 5th wheel pin box 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. 5th Wheel Pin Box reviews from real customers.
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MORryde 5th Wheel Pin Box - MR55QR

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

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:

Ratings & Reviews

4.7

223 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.

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See what our Experts say about this MORryde 5th Wheel Pin Box

  • 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.
    view full answer...
  • Will The MORryde Replacement Pin Box Offer More Length Than A Lippert Rhino Pin Box
    Hey Pat, The Rhino box definitely is shorter than what most Rver's were hoping for so we get this question all the time. Switching to a MORryde Cushioned pin box designed with a Rhino box bolt pattern unfortunately won't give you extra clearance since they made them with a matching 13.27" length from the king pin to the first set of bolt holes. It will help reduce chucking and road vibration though. If you went with this pin box you'd want part # MR83QR to match your GVWR to the shear...
    view full answer...
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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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  • Recommended Sidewinder Pin Box for a Lippert Rhino
    Yes, it is! The Reese Sidewinder 5th Wheel King Pin with Rotating Turret item # RP34FR is indeed a compatible replacement for a Lippert Rhino pin box.
    view full answer...
  • 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/...
    view full answer...
  • 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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  • Will MORryde Custioned Pin Box For Lippert Rhino Pin Box Add Length
    There are MORryde cushioned pin boxes for the Rhino, though 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.
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
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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...
    view full answer...
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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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    Image 1 for
  • 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...
    view full answer...
    Image 1 for
  • 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.
    view full answer...
  • 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.
    view full answer...
  • MORryde Pin Box Replacement For Lippert Rhino Pin Box
    Emailed for pin box model
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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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  • 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.
    view full answer...
  • Recommended MORryde Upgraded Pin Box For A 2022 Grand Design Momentum 350G
    Hey Russ, With a long bed the difference on pin box length won't be an issue, but we will need to check a few other things to make sure that you're getting the correct fit. MORryde has two capacities for their upgraded pin boxes; one for the overall pin box capacity, and one for the shear spring capacity. The overall capacity can exceed the GVWR of your trailer but you'll want to make sure you fall within the shear spring capacity range for a smoother ride quality. The MORryde Cushioned...
    view full answer...
  • 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.
    view full answer...
  • 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.
    view full answer...
  • What Is The Torque Spec For The Bolts That Came With My MORryde MR55QR Pin Box
    Hello David. The torque chart in the instructions refers to the diameter of the threaded portion of the bolt, not the head. So, while the head may fit a 15/16" socket, this is not the size of the bolt itself. Please do confirm the size of your bolts and refer to the chart below.
    view full answer...
  • Recommended MORryde Pin Box to Replace Lippert Rhino 21K
    Jerry to answer your second question first, they probably put it on to overcompensate for the GVWR to make sure that the pin box had plenty of capacity for the trailer. For your first question, you can use the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino # MR55QR. This will replace your current Lippert Rhino 21K pin box and has a bolt on install requiring no drilling.
    view full answer...

Do you have a question about this 5th Wheel Pin Box?


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 Michael B
Updated by:
Michael 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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