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  1. 5th Wheel Pin Box
  2. MORryde
  3. Lippert 1621
  4. Lippert 1621HD
  5. 21000 lbs GTW
  6. Upgraded Pin Box
MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621 and 1621HD
MORryde

MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621 and 1621HD

Part Number: MR74VR
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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 MR74VR 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 11.5K to 14K Trailers w/ Lippert 1621 and 1621HD. 5th Wheel Pin Box reviews from real customers.
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MORryde 5th Wheel Pin Box - MR74VR

  • Lippert 1621
  • Lippert 1621HD
  • 21000 lbs GTW
  • Upgraded Pin Box
  • Reduces Chucking
  • MORryde
  • Rubber Spring Suspension
  • 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 11,501-lb - 14,000-lb GVWR (maximum loaded weight)
    • Designed to replace Lippert 1621 or 1621HD pin boxes
  • Pin box weight capacity: 21,000 lbs
    • Do not exceed the GVWR that is listed in your trailer's manual
  • Spring capacity (for optimal ride): 11,501 lbs - 14,000 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.


Although this pin box can tow up to 18,000 lbs, the internal rubber shear spring is optimized for trailers that range from 11,501 to 14,000 lbs. A rubber spring built for 18,000-lb trailers would be too stiff to provide any cushion for an 11,500-lb trailer, while a rubber spring built for 11,500-lb trailers would be too flexible for a 18,000-lb trailer. To get the best results from this cushioned pin box, the sweet spot is a trailer in the 11,501-lb to 14,000-lb range.


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 1621HD pin box, so the installation is very straightforward. After removing your old Lippert 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.



RPB72-1621HD-04 More Ride Fifth Wheel Rubber Pin Box Replacement for Lippert 1621 and 1621 HD - 11,501 - 14,000 lbs GVWR

Installation Details MR74VR Installation instructionsAlternate Instructions MR74VR Installation instructions



Customer Satisfaction Score:

Ratings & Reviews

4.7

242 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

  • Correct Pin Box Replacement For 2020 Grand Design Reflection 311BHS
    Hey Ted, thanks for reaching out, and thanks for providing all of that info on your camper. Sounds like you are already on the right track because the MORryde Cushioned 5th Wheel Pin Box # MR74VR is exactly correct for your 2020 Grand Design Reflection 311BHS. This pin box uses the same 1621 bolt pattern and is correct for the 13,995lb GVWR. There will be no length difference between this and your stock 1621 pin box, but it will offer better ride quality.
    view full answer...
  • Looking for Cushioned Pin Box for 2025 Rockwood Signature R361RLS
    Hey Brian, the MORryde part # MR74VR is most likely what you need but I wasn't able to verify for sure what pin box is on your camper. Could you verify what numbers/model info you can find on the sticker that is on your pin box?
    view full answer...
  • Does The MORryde Cushioned 5th Wheel Pin Box MR74VR Come With Bolts?
    Welcome back, Ted. My sons name is Ted too (after Theodore Roosevelt), so you are easy to remember :) So the MORryde Cushioned 5th Wheel Pin Box # MR74VR does not come with bolts. Generally folks will reuse the original bolts, but if you need a new bolt kit you can use part # GY86FR which comes with (12) grade-8 5/8" bolts, washers and locknuts.
    view full answer...
  • MORryde Cushioned Pin Box Upgrade for a 2012 Keystone Cougar 5th Wheel
    Hey JT, thanks for reaching out and providing all of the information! You have a Lippert 1621 pin box (according to my contact at Lippert) so the correct MORryde Cushioned Pin Box is the part # MR74VR. What 5th wheel hitch do you use to tow your Keystone?
    view full answer...
  • Correct MORryde Cushioned Pin Box for 2016 Jayco 321RSTS
    Hey Jeff! Thanks for providing the picture to help me identify your pin box. It isn't often they aren't sure, but according to Lippert it could be a 1621, an unspecified MORryde, or a Reese Revolution. If it doesn't rotate we know it isn't the Revolution and I think we can rule out the MORryde as well. The 1621 will be 12" wide (G in the picture below) and have two rows of bolts if you want to double check. It looks like the GVWR on your 2016 Jayco 321RSTS is 12,500 lbs so assuming it...
    view full answer...
  • Replacement Parts for MORryde Cushioned 5th Wheel Pin Box
    Hi Allen, welcome back! If you're referring to the glide pad/disc that is something you will have to get from MORryde. If you mean the shear spring we have the following available: -Replacement #03 Rubber Shear Spring for MORryde Rubber Pin Boxes for Trailers Under 11,500 GVWR # MR65UR -Replacement #04 Rubber Shear Spring for MORryde Rubber Pin Boxes for 11.5K to 14K Trailers # MR75UR -Replacement #05 Rubber Shear Spring for MORryde Rubber Pin Boxes for 14K to 18K Trailers # MR85UR -Replacement...
    view full answer...
  • Will MORryde Cushioned Pin Box MR74VR Fit 1621 and 1621HD Pin Box
    Hey Kevin, great question but yes the Lippert 1621 and 1621HD pin boxes use the exact same bolt pattern so the MORryde cushioned pin box part # MR74VR would work for you.
    view full answer...
  • Correct MORryde Pin Box for Grand Design Reflection 337RLS
    The Grand Design Reflection 337RLS has a GVWR of 13,995 lbs. This is right in the middle of the MORryde Cushioned 5th Wheel Pin Box part # MR74VR for 11,501 lbs to 14,000 lbs or part # MR84VR for 14,001 lbs. If you wanted to do things completely by the book then go with the lesser rated model up to 14,000 lbs. This will work fine for you and is rated appropriately. That said, from our experience, customers tend to overload their trailer and it's worthwhile to have some extra margin of error...
    view full answer...
  • Replacement MORryde Cushioned Pin Box For a 2021 Grand Design Reflection 320MKS 5th Wheel Camper
    For your 2021 Grand Design Reflection 320MKS it appears that you currently have a 1621 Pin Box # LC1191191. You can verify this by checking the bolt hole dimensions on your Reflection. The horizontal bolt holes will be spaced 7-7/8" apart on center and the vertical bolt holes are spaced 2" on center. I have included an image with these dimensions. The MORryde Cushioned 5th Wheel Pin Box # MR74VR will be the correct pin box for your Reflection. This pin box is designed to be used with...
    view full answer...
    Image 1 for
  • Is MORryde or Rota-Flex a Better 1621 Pin Box Replacement?
    Hey Donald, thanks for reaching out! I recommend using the MORryde Cushioned Pin Box # MR84VR over the Curt Rota-Flex # LC328330 any day because it has better cushioning technology. Back in the day when the Rota-Flex was first released it was top-notch, and while it's still an effective pin box, the MORryde system performs better. The MORryde number I referenced above is for 14K - 18K trailers. If you have a different GVWR then you'll either need part # MR74VR for 11.5K - 14K trailers...
    view full answer...
  • MORyde Cushioned 5th Wheel Pin Box Replacement for Lippert 1621
    If you currently have the Lippert 1621 5th Wheel Pin Box, # LC1191191, and want to replace with a MORyde, then the MORyde replacement will be the MORryde Cushioned 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs, # MR74VR. This is designed for trailers with a GVWR of 11,501 to 14,000 lbs. and to replace Lippert 1621 pin box.
    view full answer...
    Image 1 for
  • Weight of MORryde Cushioned 5th Wheel Pin Box
    The MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621HD, # MR74VR has weight of 190 lbs.
    view full answer...
  • Determining The Correct Replacement Pin Box For A 2021 Grand Design Reflection 295RL 150 Series
    Manufacturers don't list the pin boxes they use so I don't know what your current pin box bolt pattern is in order to confirm the fitment of the MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621HD # MR74VR. On your pin box there should be a sticker that has a serial number and RPO number that we can use to determine the bolt pattern, otherwise you'll want to check out the help article I have attached below for step by step instructions on how to measure and determine...
    view full answer...
  • Is the MORryde Cushioned 5th Wheel Pin Box for 11.5-14K Trailers Lippert 1621HD An Extended Pin Box
    The MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621HD part # MR74VR fits a Lippert 1621 pattern which is considered the long style. Pin boxes are matched based on the pattern, Lippert 1621 is most standard. There are five holes used for attachment.
    view full answer...
  • Recommended MORryde Cushioned 5th Wheel Pin Box Replacement For A 2022 Grand Design Reflection 5W
    For your 2022 Grand Design Reflection 303RLS 5th wheel, I recommend going with the MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621HD # MR74VR instead of the MORryde Cushioned 5th Wheel Pin Box for Up to 11.5K Trailers w/ Lippert 1621HD # MR64VR you mention. This pin box is designed to work with 5th wheel trailers with a 11,501-14,100 GVWR, a pin box weight capacity of 18,000-lbs, and is meant to replace the Lippert 1621, and 1621HD pin box, so you'll want...
    view full answer...
  • Upgrading to a MORryde Cushioned Pin Box On a 2021 Grand Design Reflection 303RLS
    The MORryde Cushioned 5th Wheel Pin Box # MR74VR (11,501-14,000lbs) is the correct replacement for the pin box on your 2021 Grand Design Reflection 303RLS. This pin box has the correct bolt pattern(1621) and weight capacity(11,995lbs GVWR) for your Reflection. Your Reflection 303RLS has a 1621 Pin Box # LC1191191 from Lippert.
    view full answer...
    Image 1 for
  • Recommended MORryde Pin Box For A 2018 Grand Design Reflection 303 With A Lippert 1621 Pin Box
    MORryde # MR64VR, # MR74VR, # MR84VR all have a GTW of 18,000lbs but each have a finetuned spring capacity for a smoother ride which is why you see 11.5k listed for the # MR64VR. Since your 2018 Grand Design Reflection 303 has a GVWR of 11995 and you're probably adding 1000-2000lbs in equipment, water, etc. you're going to want the MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621HD # MR74VR. This model will be an upgrade from the factory 1621 pin box on your...
    view full answer...
  • Cushioned MORryde Pin Box For 2021 Grand Design Reflectoin 337RLS
    While the MORryde # MR74VR is rated up to 18,000 pounds, it is optimized to give the best ride for trailers weighing 11,500 to 14,000 pounds. This will be a very good choice for your Reflection as long as it has the 1621 or 1621HD bolt pattern - which is very common. You should find a bolt pattern number on the current pin box or flanges. If you have a different bolt pattern just email me back for a refined recommendation.
    view full answer...
  • Solution for MORryde Pin Box on Fifth Wheel Trailer that Moves Forward and Back A Lot
    Going with a stiffer shear spring in your MORryde pin box isn't the best solution to your problem. Instead of the pin box moving that force would be more transferred to the fifth wheel trailer and would actually chuck harder. The best way to prevent the chucking is to go with a fifth wheel hitch that has a tighter jaw design that will limit movement more and prevent the chucking. I don't know what you have now hitch-wise but the B and W Patriot part # BWRVK3200 has a very tight jaw design...
    view full answer...
  • Do All PullRite 5th Wheel Hitches Require A Capture To Connect To A Pin Box
    Because the head of PullRite hitches pivot you will always need to use some sort of capture plate or wedge kit to prevent the king pin from pivoting inside the jaws of the hitch. Without one you'd go to turn and the hitch head would turn but the king pin wouldn't have anything to push against would just remain straight with the head spinning around it, not allowing the trailer to turn and would just end up dragging your wheels sideways across the road. For a Lippert Rhino Box you would...
    view full answer...
  • How to Choose Correct MORryde Pin Box Replacement for 2022 Grand Design Refection 341RDS
    If you can let me know what the pin box number is on your 5th wheel I can let you know which MORryde upgrade will be correct. There should be a sticker on the side of your pin box with a number listed on it that I'll need. For example, the part # MR74VR is for 11.5K - 14.5K 5th wheels with 1621 and 1621HD pin boxes while the part # MR77VR is for a 11.5K - 14.5K 5th wheel with a 1116 pin box. These are the 2 most common pin box numbers so they will likely be a fit but if you have something...
    view full answer...
  • Correct MORryde Cushioned 5th Wheel Pin Box for a Grand Design Reflection 31M
    The correct MORryde Cushioned 5th Wheel Pin Box for a Grand Design Reflection 31M is part # MR74VR.
    view full answer...
  • Recommended MORryde Replacement Pin Box For A Lippert Rhino Box
    Thank you for the pictures, the Rhino Box has its own bolt pattern so the correct MORryde pin box for your trailer's GVWR is the MORryde Cushioned 5th Wheel Pin Box for 11K to 14K Trailers w/ Lippert Rhino # MR44HR. The king pin is most likely going to sit a bit lower since the Rhino is so small. It looks like you have an extra set of bolt holes above that you could mount the new pin box to help keep the nose a bit more level while towing. You can also lower the hitch head to lower the...
    view full answer...
  • Replacement Pin Box Options For A Reese Goose Box 94720
    The 94720 Reese Goose Box is a fit for 1621, 1621HD, and 0719 bolt patterns so you most likely have a 1621 bolt pattern. That being said, it's still best to measure to confirm the pattern. I've attached a link below that will walk you through measuring for the bolt pattern. For a standard 1621 pin box you can use the Lippert 1621 5th Wheel Pin Box # LC1191191. I do recommend going with an upgraded option like the MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert...
    view full answer...


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