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Roadmaster Stowaway Storage System - Easy Off

Roadmaster Stowaway Storage System - Easy Off

Item # RM-4000-40
Our Price: $112.20
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RM-4000-40 - Storage System Roadmaster Accessories and Parts
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  • Reviews (26)
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  • Videos (1)
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Roadmaster Accessories and Parts - RM-4000-40

  • Tow Bar
  • Covers and Storage
  • Storage System
  • Roadmaster


  • Limited Lifetime Warranty

Roadmaster Stowaway Storage System with Rear Access

The Stowaway (RM-4000-40) simply slides over your ball mount or tow bar stinger and provides a quick and easy way to store Roadmaster towing equipment. However, the drop-down collar with pull pin design allows you to easily remove the Stowaway for access to the rear diesel compartment without having to take the tow bar off! A center cut-out allows quick and easy access to most motorhome electronics.

The Stowaway with rear RV access stores a Guardian rock guard. With a set of optional Quick-Disconnects (RM-222) the Stowaway will also store either a Stowmaster tow bar, or any Roadmaster Quick-Disconnect tow bar base.

4000-40 Roadmaster Stowaway Storage System - Easy Off

Video of Roadmaster Stowaway Storage System - Easy Off

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Roadmaster Stowaway Storage System Review

Today I'm going to be taking a look at the Roadmaster Stowaway Storage System with rear access. Part number RM-4000-40. Here's what it looks like. As you can see it's nice powder coated steel design, with galvanized hardware. It's going to use the same quick release design that for Guardian Defense on the base plate uses. You can use your pins as well. And it's an easy access by loosening up our set screw, taking out our pin, we can lift off our bracket to gain access to the back of our coaches hinge department.

When you leave this in place while you're towing, you can simply route your wires through this nice cutout. Fits in our bracket. This is really handy if you're going to stowaway your Guardian when your vehicle is not being towed and keep it on the back of your RV, not having to use up the storage space in your RV. Now that we've covered some features, we'll show you how it goes on. You're going to slip it down. We'll put in this pin. It's included.

And clip. Then we can tighten up this thumb screw to help keep it nice and secure. Now the other brackets installed loosely in place and we're going to take our Guardian and set it in the . In there and help us adjust the distance we need between the two uprights. We tighten up our thumb screws. It's going to help insure it's in the upright position.

To keep our Guardian secure; we'll put the clips that come with it in place; we'll just take two 3/4 inch wrenches and we can snug them up. We'll repeat that for the other side. Now, you can loosen up your set screw and adjust it up little closer to your RV if you like. Then secure it. Now should you need access to the engine compartment in your RV, you can pull out the clip, take out the pin. Loosen up our set crew and just lift the entire thing out to gain access to your engine compartment. That's going to do it for our look at the Roadmaster Stowaway Storage System with rear access.

Part number RM-4000-40.

Customer Satisfaction Score:

Customer Reviews

Roadmaster Stowaway Storage System - Easy Off - RM-4000-40

Average Customer Rating:  4.8 out of 5 stars   (26 Customer Reviews)


A great improvement over the earlier Roadmaster Stowaway. No longer need to remove complete tow bar to take off Storage System at end of season.


Very easy to install. Works great for the GuardianShield. I did have to purchase a
7-3/4" hitch extension (RM-071-075) in order to clear the ladder but it's exactly what I was looking for. It is also well built. Received item as advertised. Will definitely order from etrailer again!


The only mod I had to do was buy a hitch extension as my tow bar was too short to mount the storage bracket.


There are several things to take into consideration, when purchasing the Stowaway. First, the rear of your RV must be relatively flat. Other objects can also get into the way. In my case, it was my roof ladder and engine exhaust tip. They come into contact with the Guardian and prevent me from fully inserting it into the Stowaway brackets. Because of this, I am not able to use the Guardian's bottom quick clips to help secure it. And since the Guardian actually rests atop my exhaust tip, I will have to make sure the tip is cool before placing the Guardian onto the Stowaway. This of course means I will not be able to drive the RV through a campground with it in place. Disappointing, but not a deal breaker, at least for me. Still glad I was able to coax it to fit, even if not as designed.


Handy place to store Rock Shield when parked. A little difficult to use. I went to Lowe's and bought some threaded knobs to replace the small thumb-screws furnished with the unit to fasten it down. Fit over hitch bar is a bit slack and could be better.


Received the Stow-a-way and took me less than an hour to put the fittings on and install on the rear of the motorhome. It fits a little close to the motorhome so may have to get an extension for the hitch.
Am very satisfied with the quality and compactness of the Stow-a-way. I had some extra mounting brackets for the tow bar and installed them and now I can stow my tow bar and Gaurdian shield on the rear of the coach when I am not traveling.
Thanks for a good product at a good price.

Great. Still looks new!
Jerry R - 07/14/2016


Works as stated . Handy place to store the towing toad protector.


The etrailer order was processed and shipped incredibly quickly. I am very pleased with the whole ordering/shipping process and etrailer seems to be really on the ball here.

One of the hardware bags had opened inside the box, and a washer fell out as I carried the box in, but remarkably, all parts were there with no shortages. The box itself had no obvious external damage, so not sure what happened, but everything is good.

The product is great for storing the Guardian shield and the large bar of the roadmaster tow adaptor.

You have to look carefully at the assembly instructions as the labels on the disconnect pieces say driver/passenger side, while the diagram shows the opposite orientation. Obviously, this can happen when the same part is used for several purposes.

The one suggestion I would have on the catalog listing is to mention the point that a receiver extension might be needed depending on clearance of the motorhome hitch. While this is obvious in retrospect, a reminder would be useful.


Before purchasing the Stowaway I had to either dismantle the Guardian or place it on the ground under the coach. Now it's secure behind the coach. Easy to move from dinghy to hitch.


Now I have a place to store my tow shield rather than trying to slide it under my RV and it's now right next to my tow car and hitch. Great solution for me!


Great product, great price, fast shipping and easy installation....if you're wanting to go that extra mile, this is the way to go......easy way to store it up and out of the way........Thanks to Sandy J. for taking the time to help me.......
You and the rest of the gang at e-trailer are the best...... Adrien A


Very satisfied with price and speedy delivery of the many components needed to tow my 2015 Equinox behind my motorhome. Thanks!!!


got my stowaway today, in good condition as expected. Great service


Works well. Takes care of having to find a place to store the towing equipment.


Service was excellent. The Stowaway arrived on time. The quality was great


Delivery earlier than indicated. Ease of installation good. Well made.


Got the item quickly. The folks were great to work with.

Roadmaster tow hitch
Ronald - 06/09/2020
Roadmaster tow hitch with rock guard and bracket. Works great. I especially like the way the lights work on the hitch. The rock guard has protected the vehicle so far. The bracket has not been used much because I simply dont use it for short visits. Before and after tech support was super.
Ronald - 06/09/2020


Great product and outstanding service.


Best Ever customer service and good prices. Fast free shipping. Thanks.


What a great company(e is to deal with.The rm 4000-40 was early and in great shape.
I look forward to the next time I need something THANKS



Works for me!


Product looks great, fit perfect, well satisfied



Show More Reviews

See what our Experts say about this Roadmaster Accessories and Parts

  • Will The Roadmaster Stowaway Storage System Work With The Roadmaster Rock Guardian
    The Roadmaster Stowaway Storage System # RM-4000-40 will work with the Rock Guardian # RM-4000 only and that is not compatible with D ring bumper mounts. The Tow defender # RM-4750 however will fold and up store on your motor home and that solution is compatible with D-Ring Bumper mounts. Included are video resources with more information from here.
    view full answer...
  • Can the Roadmaster Stowaway Storage System Store Both a Tow Bar and The Guardian Simultaneously
    You can use the optional # RM-222 car side quick disconnects to store both the Guardian # RM-4000 and a tow bar with quick disconnects. The Roadmaster Stowaway Storage System, item # RM-4000-40, can be locked to the motor home drawbar with an optional locking hitch pin like the Trailer Hitch Receiver Lock - Stainless Steel Flush Design for 2 inch Trailer Hitch Receiver, item # e98882.
    view full answer...
  • Base Plates Needed to Use the Roadmaster Guardian and Tow Defender on a 19 Cherokee Trailhawk
    Yes, if you replace the Roadmaster Direct-Connect Base Plate Kit part # RM-521451-5 with the Roadmaster Crossbar-Style Base Plate Kit part # RM-521451-4 on your 2019 Jeep Cherokee Trailhawk Elite you can then use the Roadmaster Guardian Rock Guard part # RM-4000, Roadmaster Tow Defender Protective Screening part # RM-4700, and Roadmaster Stowaway Storage System part # RM-4000-40 that you already ordered. The reason that you can't use the Roadmaster Direct-Connect Base Plate Kit part #...
    view full answer...
  • Correct Base Plates for 2007 Honda CR-V With StowMaster Tow Bar
    I believe you are speaking of the Roadmaster StowMaster Tow Bar # RM-501, as the Stowaway # RM-4000-40 is a storage system which slides over a tow bar. In order to use your StowMaster you would need the Roadmaster EZ4 Base Plate Kit # RM-521559-4, which is confirmed to work with that tow bar and will allow you to use the quick disconnect system. That system features brackets on the StowMaster and EZ4 plates which line up and are held in place with the pins that you referenced.
    view full answer...
    Image 1 for
  • Comparing The Roadmaster EZ4 And Roadmaster EZ5 Base Plates For 2017 Ford Edge
    Roadmaster EZ4 Base Plate Kit - Removable Arms # RM-524454-4 is a very similar system to the EZ5 Base Plate Kit - Removable Arms # RM-524444-5 which are both a confirmed fit for 2015-2017 Ford Edge SE and SEL models. The difference is the EZ5 has the streamlined design that removes the need for the quick-disconnect crossbar. This baseplate will not work with the Sterling Cables, so the cables need to be attached to the frame of the vehicle. The EZ5 although much cleaner and more hidden...
    view full answer...
  • Will the Roadmaster Guardian and Tow Defender Work with the Nighthawk Tow Bar
    I do have an option for you but I spoke with my contact at Roadmaster and they informed me that the Roadmaster Stowaway Storage System part # RM-4000-40 which is used to attach the Roadmaster Guardian Rock Guard part # RM-4000 on the back on an RV will not work with the Roadmaster Tow Defender Protective Screening part # RM-4700. In order to use both the Stowaway and the Guardian on your vehicle with a protective screen you will need to use the Roadmaster Tow Defender Protective Screening...
    view full answer...
  • Trailer Hitch Mounted Enclosed Cargo Carrier Recommendation
    The Stowaway Max is an enclosed cargo carrier but we do not carry it. We do have the Rola enclosed cargo carrier, # 59109, for a swing away version. I have included a link to a review video for you. We also have the Thule enclosed cargo carrier, # TH665C. It will fit Class II or III hitches. It tilts but does not swing out. I have linked a video review of this carrier as well.
    view full answer...

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Info for this part was:

Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael H
Employee Joshua S
Video by:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Andrew S
Installed by:
Andrew S
Employee Isabelle B
Updated by:
Isabelle B

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