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Roadmaster InvisiBrake Supplemental Braking System

Roadmaster InvisiBrake Supplemental Braking System

Our Price: $1,175.00
Tow Bar Braking Systems

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Shipping Weight: 16 lbs
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Get automatic, real-time braking in your towed vehicle with the InvisiBrake. Actuator box installs permanently so that you never have to remove, adjust or reactivate. System connects to RV and engages car brakes when the RV brake lights illuminate. Great Prices for the best tow bar braking systems from Roadmaster. Roadmaster InvisiBrake Supplemental Braking System part number RM-8700 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (218)
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Roadmaster Tow Bar Braking Systems

  • Brake Systems
  • Air Brakes
  • Hydraulic Brakes
  • Pre-Set System
  • Roadmaster
  • Fixed System
  • One Time Set-Up
  • Power Assist Brake Compatible

Get automatic, real-time braking in your towed vehicle with the InvisiBrake. Actuator box installs permanently so that you never have to remove, adjust or reactivate. System connects to RV and engages car brakes when the RV brake lights illuminate.


Features:

  • Braking system activates brakes on towed vehicle when you engage the brakes in your RV
    • Cable pulley tugs towed car's brake pedal gently, gradually and with balanced pressure when brakes are applied in RV
  • Permanent installation - nothing to remove or disconnect
    • Actuator box mounts out of the way - typically beneath the driver's seat
  • One-time setup - no need to readjust or continuously activate
    • System automatically functions when connected to RV
    • Braking pressure does not have to be readjusted after initial setup
  • Compatible with hybrids and other continuous-power-assist automobiles
    • Braking pressure can be adjusted from 5 psi to 80 psi so that an appropriate amount is applied
  • No false braking - activates only when RV brake lights are illuminated
  • Integrated battery protection
    • Bypasses 12V outlet - connects directly to towed car's battery and constantly charges battery when you are towing
    • Provides a trickle charge to the vehicle battery if the running lights are on on the tow vehicle
  • 2-Stage motor home monitor has audible and visual warnings
    • LED monitor illuminates when towed car's brakes are activated
    • Audible alert lets you know if brakes have been activated for too long (approximately 20 seconds)
      • System automatically begins to release pressure after 15 seconds of continuous braking
  • Emergency breakaway device included
  • Made in the USA


Specs:

  • Controller box dimensions: 8-3/4" long x 8-3/4" wide x 2-3/4" tall
  • Power draw: 6 mA - 10.8 amps
  • Maximum braking pressure: 80 psi
  • Limited lifetime warranty


Note: This product does not work on vehicles with a non-electric hydroboost braking system.


When using TrailerMate wiring with the InvisiBrake, it will be necessary to purchase an additonal two diodes, (RM-792 - sold separately), to prevent the towed vehicle's brake signal from back-feeding into the InvisiBrake system and activating it when attempting to drive the vehicle.


Fully Automatic Braking Action

Wire the InvisiBrake into your vehicle, connecting it to the battery and electrical harness, and you never have to remove it. When you're ready to tow your car, just connect the it to your RV via the included electrical cable, and the system is ready to go.


The InvisiBrake is designed to activate the brakes in your towed car upon receiving a signal from your RV that the motor home's brakes have been applied. This signal is sent via the wiring harness whenever the RV's brake lights are illuminated. This way, you get real-time braking action, ensuring that your towed car brakes at the same time and for the same duration as the brakes in your RV. In addition, there will be no false braking when you hit bumps or potholes.


Adjustable Pressure Settings

The braking pressure of the InvisiBrake can be adjusted from 5 psi to 80 psi depending on your individual application and preferences. Typically, a braking system has to apply an extreme amount of force to activate the towed car's brakes because the vacuum-assist function of the brakes is not active when the ignition is off. This excessive pressure would cause damage to your car if it had "active" brakes. Because this system lets you adjust the braking pressure to a comparatively minimal amount, you can use it on automobiles that have continuous-power-assist brakes, such as Hummers and hybrids, without having to worry about any potential damage.


The pressure setting needs to be adjusted only once, during the initial installation, at which point you can test the system at different settings to determine which feels best. Once the setting is determined, it does not have to be readjusted, so your system is always ready to go.


Permanent, Out-of-the-Way Installation

Most often, the InvisiBrake actuator box installs beneath the front seat of your towed car, neatly tucked away so that you won't see it and it won't take up any storage space in your vehicle. You can, however, install it anywhere in your towed car that is convenient for you, as long as you can still access the adjustment knob.


A bracket and cable pulley will install on the arm of your vehicle's brake pedal. This will not interfere with normal braking function and does not have to be adjusted, removed or activated. The entire system can stay in your car year 'round, waiting for those times when you need to tow. And once you do hook up your car to your RV in preparation for towing, the system will function automatically.



8700 Road Master Invisi-Brake Tow Bar Braking System

Item # RM-8700

Installation Details RM-8700 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Roadmaster InvisiBrake Supplemental Braking System - RM-8700

Average Customer Rating:  4.8 out of 5 stars   (217 Customer Reviews)

Get automatic, real-time braking in your towed vehicle with the InvisiBrake. Actuator box installs permanently so that you never have to remove, adjust or reactivate. System connects to RV and engages car brakes when the RV brake lights illuminate.

by:

This product was supposed to fit under the seat of my 2022 Chevrolet Colorado. It doesn't even come close. The power seat motors do not allow any room between the seat and the floorboard of the cab. I am returning it "Unused, Uninstalled and in the original packaging. I am being charged return shipping fees. I could understand if I just changed my mind but the product DOES NOT FIT!!! I ordered a replacement air brake unit that will fit. Why am I being charged return shipping for etrailer's mistake in compatability??

Etrailer Expert

Jenny N.

6/14/2023

You are welcome to return this InvisiBrake system however I wanted to let you know that while most of the time the InvisiBrake actuator box installs beneath the front seat of the towed car it does not have to be installed there. It can be installed anywhere in the towed car that is convenient as on as you can still access the adjustment knob.



by:

A little more difficult than others to install but definitely worth the money. The only thing I noticed is every couple of hookup’s you need to pump the brakes once to activate the system

Russell

6/3/2023

Works great however if there’s a short anywhere in the primary vehicles light wiring. It will randomly apply the brakes.



by:

Intermittent brake application sticking on. 3 different times in 4000 miles but always seems to fix itself.

Dennis

10/13/2023

Still occasional compressor sticking on. Times out eventually after annoying buzzer alarm.

Etrailer Expert

Jenny N.

11/7/2023

@Dennis I reached out to Roadmaster and there could be more than one reason it is happening. The best way would be to reach out to Roadmaster so that they can confirm the situation and components that are in play to better know what way they can help. I will email you the contact details.


by:

I've always have a Invisibrake system installed on my tow vehicle as they work excellently and are not in the way.



by:

I love the InvisiBrake system! It's permanent installation and flawless operation really simplifies the process of connecting and disconnecting the towed vehicle. I would definitely buy it again and recommend it without hesitation.



by:

My Invisibrake system works excellent. I t was easy to install for anyone with a little mecanical ability. Love it



by:

Not using it anymore because the Ford Maverick we got it for, was upgraded to a Ford Ranger. It did not supply enough power to charge the battery. The charging option was one of the main reasons we bought this one. I think it is different for other cars. It was a little challenging to adjust the brake power. We switched to a portable solution for the Ranger.



by:
2016 Jeep Grand Cherokee

Good quality materials.
Fast delivery
Good
price.
Complicated install. 16 hours labor for me to install toad portion, including bulb kit. 8 hours to install indicator light/warning beeper in RV. Worth the one time effort for me to not have to set and remove floor mounted brake system each time I want to drive the toad.

2002 Jeep Grand Cherokee with electric drivers seat. Controller would not fit under drivers seat, installed in cargo area behind rear seat. Good instructions for install.

Kit included everything I needed. Due to controller placement, the controller power leads were not long enough. Air line to air cylinder connection was difficult to get right. Was not as "sure" as air line to controller. Took 3 attempts to get it to not leak.

Overall a good product, I expect it will last a long time and be very reliable.



by:
2018 Jeep Wrangler

Realitively easy to install except for the brake indicator in the RV. The problem was in the 2018 Wrangler, getting the wire I needed ti splice int for the in-use indicator.



by:

The installation went as planned. All parts fit and worked the first time.



by:

Purchased this braking system and installed on 2005 Jeep Wrangler and towed for over 3000 miles with no issue. Uninstalled and reinstalled on a 2016 Jeep Wrangler this fall. By far, the best supplemental braking system we’ve ever used.



by:

Works great after I finally got it installed (see review on wiring harness)



by:

2021 Ford Ranger. The installation is not really technically challenging, but there are a lot of steps and you need to twist yourself under the dash for quite a bit of it. The main installation comment I would have is assume you are going to drill a hole in the firewall for the wires/air hose. Using the existing grommets is more work/risk than it is worth. There were several videos, but none specifically for my vehicle and I would have liked the specific detail on the air connection. We have about 800 miles towing with it so far and it definitely it helps with stopping, plus the break-away safety is good peace of mind.



by:

Happy so far. I wouldn’t say installation is difficult but it did take me some time. Unit just barely fits under the drivers seat of my ‘03 TJ so it is out of the way. Does take away leg room from the rear passenger but who rides in the back of a TJ right? I did have to fab up some spacers for the clip that holds the brake cable due to the fact that the firewall of my TJ has a ridge right where it needed to be mounted.



by:

The ordering process was easy and convenient. The free shipping was awesome, and the product was delivered in less than a week. I am sure the product is great but am in the process of installing the base plates and tow bar. The Invisibrake and wiring will come later. Great job Etrailer!



by:
2015 Jeep Wrangler Unlimited

The product arrived within a reasonable amount of time. Instruction for installation was pretty good between both what came with the kit and the video etrailer web site. For the most part the installation went well but there are a few things I would like to comment on, and they are:
1) The self tapping screws to install the control unit to the floor of my towed vehicle were too short to get through the carpeting and into the sheet metal with enough bite to hold. Instead I used longer 1/4 - 20 bolts.
2) The vacuum check valve came apart while I was pushing it into the brake vacuum line. I was able to not lose the rubber membrane inside and used super glue to put it back together. I tested it and is working fine but I did order another check valve to the tune of [a few extra] more dollars.
3) It would have been nice to have the etrailer video show something on where to hook up the "Monitor System" from the towed vehicle. It took some doing but I was able to locate the brake switch and tap into the cold side for the signal.

Although I haven't put any miles on this system yet my test of it went well.

Etrailer Expert

Rachael H.

9/1/2017

Thanks for the feedback and review Ken. I wanted to let you know that I have included a link to one of our installation videos and at about the 15 minute mark there are some details about installing the monitoring system in the RV.

Ken K.

9/1/2018

A year later and Im still in love with the Roadmaster tow bar & base plate and InvisiBrake braking system. We just got back from a road trip that started around Seattle down to Bryce canyon and back. The tow bar and brake system worked flawlessly, I could not be more pleased. Also, recently I traded in the first Jeep that I installed this system on for a newer Jeep. Knowing that I would be towing the new Jeep as well, I wanted to uninstall the base plate and brake system from my old Jeep and reinstall them on the new. The process went very well, actually faster than the first time I installed it. So, bottom line is that Im very pleased with this set up and would recommend it highly.



by:
2014 Honda CR-V

Installed in a 2014 CRV. Worst part was getting all the wiring and under the door sill trim panel and routed up through the firewall into the engine compartment, and getting the cable and pulley installed up to the brake pedal. Pretty crowded under the dash in a CRV (my ribs are still sore)! had to use a different clamp on the vacuum cylinder because I had to move it forward of where the video showed in order for the cable to reach the mounting location under the dash. Had to clamp it around the larger end of the cylinder and the supplied clamp would not fit around the larger diameter end. Maybe Roadmaster has shortened the cable? Haven't tested yet but have high hopes! I used the videos extensively, and couldn't have done it myself without them! Not bad for a 72 year old!

G.d.

8/23/2016

Excellent! Have used it towing my CRV on two 2,ooo mile trips since installation. Works very well



by:
Jeep Grand Cherokee

Permanent installation looks and works great. Simply connect to the tow vehicle and ready to go…every time! The only issue I see is the Jeeps brakes seem to lose vacuum as the brake pedal is “hard” to push after sitting overnight.



by:

etrailer is awesome to deal with, very knowledgeable and helpful. We would highly recommend this company for sales and installation.



by:
2009 Subaru Forester

I would highly NOT recommend the Invisibrake system if you are installing it yourself unless you are young and have a minimum of a Masters Degree in Automotive Engineering.



by:

It’s great! Easy set up!



by:

This review is more for eTrailer than the product RM-8700, which is a great product as well. I will be submitting further reviews as I install the device.
If you want to work with a knowledgeable staff, one that actually listens to your needs and not a company that simply sells a product just to get numbers. Deal with eTrailer.
If your RV has any need these guys know or will find out (as long as its in their area of expertise) and get back to you. They carry great products, they ship as promised and they stand behind what they sell. I highly recommend eTrailer.

Guy V.

8/10/2020

Most excellent products and customer service. I had purchased a few different items from eTrailer and found that there were a couple of missing items. Without question or hesitation, they were in shipping and satisfying my problem. After I got into the project, I found the missing items and notified eTrailer of my error. I cannot say enough good things which describes the excellent customer service, product knowledge and assistance they offer their customers and potential customers.



by:

Works well and installation went well but if not familiar with electrical wiring and general vehicle knowledge I would suggest having someone install for you.



by:
2016 Jeep Wrangler Unlimited

It was not too difficult to install if you have basic mechanical and electrical knowledge. After a year owning it and using, I can while heartedly say this is an EXCELLENT PRODUCT. I never had a breakaway to really test it, thank God, but the peace of mind knowing it’s there is tremendous!

Doug S.

4/21/2020

Perfect operation still to this day!



by:
Jeep

I have one in my jeep and works great. Just put a 2nd one in my friend's jeep and he loves it. Very easy to use and the adjustments are easy, depending on how much braking you want on your towed vehicle.


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Show More Reviews

See what our Experts say about this Roadmaster Tow Bar Braking Systems

  • Could Box of Roadmaster InvisiBrake Install Under Dash of 2013 Chevy Silverado 1500
    Your picture didn't make it through but if you had room for the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 is really designed to mount on the interior of a vehicle where there wouldn't be excessive heat or weather exposure.
    view full answer...
  • Would the Roadmaster Invisibrake System Fit a 2006 Ford Explorer
    Yes, the Roadmaster Invisibrake part # RM-8700 is a fit for your 2006 Ford Explorer. This system can basically fit any vehicle so it would work well for yours.
    view full answer...
  • Roadmaster InvisiBrake Supplemental Braking System For 2002 Jeep Grand Cherokee
    The reviews we have received from our customers about the Roadmaster InvisiBrake Supplemental Braking System, part # RM-8700 all share the same theme. The only complaint is that is not a really easy installation. But everyone agrees it is worth the effort to do a one time install and not have to worry about resetting the unit every time it is going to be used.
    view full answer...
  • Will Roadmaster InvisiBrake Supplemental Braking System Work on 2001 Toyota Tacoma PreRunner
    I checked with Roadmaster and confirmed that yes, the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 WILL fit your 2001 Toyota Tacoma PreRunner. I have added a link to the instructions for you to check out as well.
    view full answer...
  • Troubleshooting Roadmaster InvisiBrake Pulsing When Flashers Are Turned On
    This is definitely something that Roadmaster has seen occur with the Invisibrake # RM-8700, so there's nothing to fear. What you're experiencing should stop after a few cycles through with the hazards flashing and once the system learns that this isn't the brake signal it shouldn't happen again.
    view full answer...
  • Is a Stop Light Switch Needed on 2012 Ford F-150 with Roadmaster InvisiBrake
    I'm glad the installation of your InvisiBrake Supplemental Braking System # RM-8700 has gone successfully! For your 2012 Ford F-150 you will not need to install a stop light switch. I spoke with my technical contact at Roadmaster and he confirmed that the stop light switch is not needed on your vehicle. He was able to tell me that the automatic shut down on your 2012 F-150 does not affect the brake light switch. Since the brake light is not affected by the automatic shut down, there is...
    view full answer...
  • Troubleshooting a Roadmaster InvisiBrake Supplemental Braking System Compressor Not Working
    Pulling the breakaway pin is not the correct way to test the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 in your 2020 Ford Escape Hybrid. You will need to have everything installed and hooked up on both the vehicle and motorhome side. You will also need to have the motorhome running when you perform the test, which is done by pressing the brake pedal. I have also included the installation instructions, the test process starts on page 16. If you perform all of this and...
    view full answer...
  • 2016 Ford Fusion Hybrid Battery Draining Quickly When Flat-Towing
    Per the attached diagram, the InvisiBrake System, part # RM-8700 is attached to the Fusion battery. I checked the owner's manual for your Fusion and it states that the key should be positioned between the off and the accessory mode. I have attached a drawing with an arrow that indicates where the key should be positioned when towing. If the key is left in the accessory position it will drain the battery.
    view full answer...
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  • Installation and Power Source of Roadmaster InvisiBrake Supplemental Braking System
    The brake controller on the Roadmaster InvisiBrake Supplemental Braking System, # RM-8700 is to be connected to the towed vehicles battery terminal or another appropriate power source. It depends on where your installer selected to pull the needed power from. Yes, the indicator light should come on when the brakes are applied. Please note the attached image showing the wiring diagram of the Roadmaster InvisiBrake Supplemental Braking System, # RM-8700.
    view full answer...
    Image 1 for
  • Can Roadmaster Invisibrake # RM-8700 Fit Under Drivers Seat of 2014 Ford Edge SEL
    In almost every case, the Invisibrake can indeed install under the driver's seat. The control box measures 8-3/4 inches wide by 8-3/4 inches long by 2-3/4 inches tall. You can measure the space under the seat to see if you have the necessary space. If for some reason it won't fit there, it can be installed under the rear seat. There will be enough cable supplied to reach either location. I have confirmed this with Roadmaster.
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  • What Is The Needed PSI For Roadmaster InvisiBrake Supplemental Braking System & Jeep Wrangler
    The Roadmaster InvisiBrake Supplemental Braking System, # RM-8700 has been pre-set at the factory at a level appropriate for "most" towed vehicles; there may be no adjustment necessary but this must be evaluated. The correct pressure is dependent upon whether the brake pedal clamp is positioned as low as possible on the brake pedal arm; and the number of curves in the cable between the cable anchor bracket and the air cylinder. The higher the clamp is positioned on the brake pedal arm,...
    view full answer...
  • Where Does the Air Used By the Roadmaster InvisiBrake # RM-8700 Come From
    The Roadmaster InvisiBrake you referenced, part # RM-8700 has a small compressor in the control box that provides the necessary air pressure to actuate the towed vehicles brakes when needed. Although the box is typically mounted under the seat, it can be mounted anywhere in the vehicle that allows access to the adjustment knob. I have linked you to an install video showing the InvisiBrake being installed on a 2002 Jeep Liberty. Although the install is for a different vehicle than yours,...
    view full answer...
  • Installing the Roadmaster InvisiBrake Supplemental Braking System on 2021 Jeep Wrangler
    I suggest installing the Roadmaster InvisiBrake Supplemental Braking System, # RM-8700 per the attached installation video, placing under the drivers seat. This provides an out of the way location while still maintaining ease of access for adjustments and routing of airline and wires.
    view full answer...
  • Invisibrake Break A Way Switch Mounting Location Recommendation
    When mounting the breakaway switch of the Invisibrake part # RM-8700 Roadmaster states to choose an area you can easily reach, near the center of the vehicle, with a surface of sufficient strength to hold the switch firmly in place, so that the break away pin will pull freely from the switch. Mount the switch in a horizontal position, with the break away pin facing the motorhome. Make certain that the break away pin can be pulled freely away from the towed vehicle, without any obstructions. After...
    view full answer...
  • Wiring Diagram And Orange Wire Connection for Roadmaster InvisiBrake Supplemental Braking System
    The orange wire, see wiring diagram attached, is not used for the Roadmaster InvisiBrake Supplemental Braking System, RM-8700. Roadmaster added that wire when developing the braking system and found that it was not needed, so it is not used for installation at all. I attached an installation video that should help you with your installation also. If you look closely just after the 8:48 minute mark you can see the orange wire and that it was not used in the installation. We just bundle...
    view full answer...
    Image 1 for Image 2 for
  • Have to Prime Brake Pedal for Roadmaster InvisiBrake Supplemental Braking System to Build Pressure
    I spoke with my contact at Roadmaster regarding the InvisiBrake Supplemental Braking System # RM-8700 that you have installed. He stated that depending on your vehicle, priming the brake pedal in order to build the necessary pressure is completely normal. Certain vehicles require this to essentially deplete the vacuum component of the system before it can operate properly. Before taking off on a trip, you will just need to press on the brake pedal a few times, as you have been doing already....
    view full answer...
  • Power Brakes Not Working After Removing InvisiBrake
    If your brakes are not working after removing the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 then it is very likely a break or other damage to the vacuum line so that's what you'll want to check.
    view full answer...
  • Is It Normal For The Breakaway Switch Of The Invisibrake To Still Work When Not Hooked Up To Tow
    Yes, this is exactly how the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 breakaway switch should work. You wouldn't have the key in the ignition when flat towing the vehicle either so that won't be a factor here. This system is going to have power from your Wrangler's battery and activates only when the stop lights on your motorhome are illuminated or if the breakaway switch pin is pulled. The only way to prevent it from activating would be to cut power to the main unit...
    view full answer...
  • Troubleshooting Roadmaster InvisiBrake Lack of Air Pressure
    I can certainly try and help you find out what the issue could be related to your Roadmaster InvisiBrake Supplemental Braking System # RM-8700 and its lack of air pressure. If it was working fine, the most likely cause is a loose hose, which would be something that would cause the air pressure not to build. Additionally, according to Roadmaster, this can happen if the pressure is set to maximum. If so, the needle will have rotated around the gauge and making it look like it is at zero,...
    view full answer...
    Image 1 for Image 2 for
  • Will the Roadmaster InvisiBrake Release Air Pressure Over Time When Disconnected from Motorhome
    The air pressure in the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 will slowly release the pressure until it is down to zero when you disconnect your 2017 Ford Focus from your motorhome. It won't drop all of the sudden once disconnected. I reached out to my contact at Roadmaster who confirmed this.
    view full answer...
  • Factory PSI Setting for Roadmaster InvisiBrake
    The braking pressure that the Invisi-Brake System # RM-8700 that you referenced comes from the factory set at is the most universal setting that works for most applications, 60 psi. You will want to test your setup using the preset setting and compare the stopping power to how the RV stops without a vehicle behind it and adjust as necessary.
    view full answer...
  • Initial Brake Pressure Setting Recommendation for a Invisi-Brake System 8700
    The braking pressure that the Invisi-Brake System # RM-8700 that you referenced comes from the factory set at is the most universal setting that works for most applications. You will want to test your setup using the preset setting and compare the stopping power to how the RV stops without a vehicle behind it and adjust as necessary. For further info check out the installation instructions I attached to the right. If your brakes are smelling hot I would try backing the pressure off a...
    view full answer...
  • 2019 Ford Ranger Separate Brake Tee Install For Roadmaster InvisiBrake
    Thank you for your purchase from etrailer of the Roadmaster InvisiBrake Supplemental Braking System # RM-8700. I'm not quite sure what you mean by vacuum gizmos, but for your 2019 Ford Ranger, according to Roadmaster, the 452154-00 is needed, as your Ranger has a 5/8" vacuum tube that needs a separate brake line tee. I have added cut outs for you which show the process.
    view full answer...
    Image 1 for Image 2 for
  • How Does the Roadmaster Invisibrake Shut Off
    The Roadmaster Invsibrake part # RM-8700 is designed to activate the towed vehicle brakes when the motorhome sends a signal back to the operating unit to brake. Once the towed vehicle is disconnected from the motorhome, the Invsibrake shuts off and no longer activates. This is one of the only supplemental braking systems that does not require turning the system off compared to other supplemental braking systems that need to be turned off or taken out of the vehicle each time you want...
    view full answer...


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