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Replacement Cable for Roadmaster Invisibrake Braking System

Replacement Cable for Roadmaster Invisibrake Braking System

Item # RM-452109
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Roadmaster Cables Accessories and Parts - RM-452109
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  • Reviews (16)
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Roadmaster Accessories and Parts - RM-452109

  • Tow Bar Braking Systems
  • Cables
  • Roadmaster


  • Fits Roadmaster Invisibrake Braking System
  • Quantity: 1 cable

452109 Roadmaster Replacement Cable for Invisibrake

Video of Replacement Cable for Roadmaster Invisibrake Braking System

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

Video Transcript for Roadmaster Invisibrake Replacement Cable Review

Rob: Rob here at and today you're going to be taking a look at the Roadmaster Replacement Cable for the Invisibrake Braking System. Now there are a few different reasons why you might need a replacement cable. Maybe your cable broke, got damaged, or if you bought a new vehicle and you want to put your Invisibrake in there, the second vehicle kit for our Invisibrake is not going to come with the cable, so you're going to reuse the one from the old kit. But I don't really like that idea because the cable is what's going to control our brakes, and if it does have any damage that's a really big safety issue. I always suggest replacing the cable for a few different reasons. If we look at our cable here, we can actually see where it is starting to get damage.

Now it is just on the outside but we don't know the condition of the cable inside, if there's any frays, bends, cracks, or any breaks. So it's a good idea to replace it.Now whether you're replacing your cable because it's damaged or you're transferring it to a new vehicle and you don't want to use the old one, we're going to need to get it into the pulley. You may be wondering how to get the cable in place because as you can see we can't just wrap it around because then it's going to be interfering right here. So if we grab our pulley, we'll pull the cotter pins out of the side and let the pins drop out. We're going to take our cable and we're going to make sure that it's wrapping around the pulley when it comes over the top, just like that.

Then make sure the bottom is tucked away. We're going to take our pins, make sure our pins go all the way through, then we can replace the cotter pins. Once you have both pins in place our cable's ready to get installed.And once you do have your pulley mounted up, we're going to route the cable straight down. I cut out a chunk out of the carpet and the insulation there so I don't have to worry about the cable rubbing, but just a small channel and we anchored our cable directly to the floorboard here using some self-tapping screws. Now if you did choose to replace your cable you're going to also replace the cylinder, and it's just going to screw into the end of the cable here.

Just want to make sure it's nice and secure. Nice and snug. Now we just take our excess slack and I like to hide it underneath the carpet. You just kinda want to put a gentle S-curve. You don't want any extreme tight angles on it, just a nice slow curve taking up all that excess slack.Now with the cylinder itself, we're going to have a very small air fitting on there.

That's where that eighth inch air line is going to go. All we have to do is push it in. You'll feel a little bit of resistance, then you wanna push down further until it completely bottoms out. It's not a bad idea to give it a quick tug and make sure it's not going to come out of the fitting. Once that's in there we're going to take our air cylinder and for our application I'm actually just going to tuck everything under the carpet and it's going to be hidden right underneath the seat here. So again, just make sure we have that S-curve under the carpet, and we can take our cylinder, tuck it all the way underneath the seat, make sure we don't have any sharp bends or anything, and then the carpet will lay flat when we put everything back in.Now once you do start putting all your panels and carpet back in place you want to make sure you cut out a section so that the carpet's not going to be directly on the pulley. You want to cut it out so it's nice and away from it, and just trim up a little piece around it. Then we're going to start putting all the panels and everything else back in place. So whether you're transferring your Invisibrake to a new vehicle or you just need to replace a broken cable, the replacement cable's going to be a lot easier and more cost-effective to replace than trying to replace the entire braking system. But that'll finish up your look at the Roadmaster Replacement Cable for the Invisibrake Braking System.

Customer Reviews

Replacement Cable for Roadmaster Invisibrake Braking System - RM-452109

Average Customer Rating:  4.9 out of 5 stars   (16 Customer Reviews)


Works like it should


Super fast delivery great job by everyone at etrailer
Thanks James


Everything great!


Everything worked as it should


It is good that you can get replacement items for the Invisibrake. Have not installed this yet. Will see if it the same quality.


great product at a fair price. I have been towing my Wrangler all over the country for a year and it works great. thanks


It is not often that I offer acolytes to companies. Let's face it, companies "should" be in business to satisfy the needs of its customers. This company has exceptions to that. They maintain their website with not only products but instructions and assistance. If they do not know the answer, believe it or not, they actually admitted it and transferred me to someone who could help. They provided fast service and delivery which all should but their followup is fantastic as well.
I just received the package and have not installed it as of yet but I will let all know about the installation instructions. I honestly highly recommend this company to all in need.


Supplied everything I needed.


Have not assembled yet but friend told me he ordered and was great
I have put one on another vehicle worked great.


Appears to be a very good product, what I expected.


Very helpful representatives and quick delivery.







See what our Experts say about this Roadmaster Accessories and Parts

  • Replacement Invisibrake Cable Recommendation
    For just the cable you need the Replacement Cable for Roadmaster Invisibrake Braking System # RM-452109. While it looks like there may be a cylinder at the end of this cable that's not the cylinder you see like the part # RM-452109-10, for Roadmaster Brake Master and Even Brake.
    view full answer...
  • Replacement Cable Recommendation for Roadmaster InivisiBrake
    The replacement cable for a Roadmaster Invisi Brake system is the part # RM-452109. If you can confirm that you need a new cable this would be the part number you'd need.
    view full answer...
  • Disconnecting the Brake Cable from the Invisibrake Cylinder.
    The inner shaft on the cylinder for Roadmaster Invisibrake is connected to the cable as well as the cylinder you have loose now. You will hold the inner shaft while loosening the very end of the assembly. It will likely be the case where you should first loosen the cable on the very end then the entire cylinder to get the assembly apart.
    view full answer...
  • Replacement InvisiBrake Installation Kit For 2019 Jeep Cherokee
    You can get the Second Vehicle Kit for Roadmaster InvisiBrake Braking System # RM-98700. This will give you everything you need to set up the invisbrake system in your Jeep cherokee. Additionally to this you will need the Replacement Cylinder for Roadmaster Brake Master and Even Brake Supplemental Braking System # RM-452109-10 and the Replacement Cable for Roadmaster Invisibrake Braking System # RM-452109
    view full answer...
  • Using The RoadMaster InvisBrake Second Vehicle Kit To Install On New Vehicle
    Thank you for you patience, I spoke to my tech guy at Roadmaster about the extra parts it says you need in the instructions. The 1/4 inch check valve it calls for is to plug the vacuum line on the original vehicle so you can swap the systems back and forth with out causing a vacuum leak. This part you will not need at all because you are not swapping vehicles. You will need the Replacement Cylinder for Roadmaster Brake Master and Even Brake Supplemental Braking System # RM-452109-10 and...
    view full answer...
  • What Is Needed to Install a Roadmaster InvisiBrake Supplemental Braking System in Second Car
    Technically, both are right. The Second Vehicle Kit for Roadmaster InvisiBrake Braking System, # RM-98700, was designed as a kit to take the InvisiBrake system out of one vehicle and permanently install the unit in another vehicle. The kit provided for new air tubing and other components that Roadmaster recommends replacing when re-installing the InvisiBrake in another vehicle. However, if you have two vehicles and you are going to be switching the InvisiBrake system between the two, then...
    view full answer...
  • Troubleshooting An Air Leak On The Roadmaster Even Brake Supplemental Braking System
    Typically if the Roadmaster Even Brake Portable Supplemental Braking System # RM-9400 is having a leakage issue it's either the Air Cylinder # RM-452109-10 or the exhaust valve # RM-450601-50, with the exhaust valve usually being the number one culprit. I recommend checking the exhaust valve with some soapy water and seeing if you get any bubbles.
    view full answer...
  • Troubleshooting A Roadmaster Even Brake Portable Braking System That Kills The Battery
    Since your compressor is running non-stop on your Roadmaster Even Brake Portable Supplemental Braking System - Proportional Item # RM-9400 you have a leak somewhere and that is definitely able to kill your battery that quickly. You'll need to find the leak and replace the part. It's most likely the Quick Exhaust Valve # RM-450601-50 or the Cylinder # RM-452109-10. You can also install a BrakeBuddy Towed Vehicle Battery Charge Kit Item # BB54FR to help keep your vehicle's battery charged...
    view full answer...

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Info for this part was:

Employee Laura H
Updated by:
Laura H
Employee Chris R
Video Edited:
Chris R
Employee Jonathan Y
Video by:
Jonathan Y
Employee Robert C
Test Fit:
Robert C

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