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Replacement Roadmaster Breakaway Kit for BrakeMaster Flat Tow Brake Systems

Replacement Roadmaster Breakaway Kit for BrakeMaster Flat Tow Brake Systems

Item # RM-8600
Our Price: $301.44
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Shipping Weight: 3 lbs
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Replace the breakaway system of your Roadmaster BrakeMaster supplemental braking system. 1-800-940-8924 to order Roadmaster accessories and parts part number RM-8600 or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Replacement Roadmaster Breakaway Kit for BrakeMaster Flat Tow Brake Systems. Accessories and Parts reviews from real customers.
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  • Reviews (19)
  • Q & A (0)
  • Videos (1)
  • Photos

Roadmaster Accessories and Parts - RM-8600

  • Tow Bar Braking Systems
  • Breakaway Kit
  • Roadmaster

Replace the breakaway system of your Roadmaster BrakeMaster supplemental braking system.


  • Replaces the breakaway kit for your BrakeMaster braking system
  • Applies your vehicle's brakes should it ever disconnect while being towed
  • Made in the USA
  • Limited lifetime warranty

8600 Replacement Road Master Brake Master Supplemental Braking Systems Break Away Kit

Video of Replacement Roadmaster Breakaway Kit for BrakeMaster Flat Tow Brake Systems

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

Video Transcript for Review of Roadmaster Tow Bar Braking Systems - BrakeMaster BrakeAway Kit - RM-8600

Hello, everybody. This is Jeff for Today, we'd take a look at this Roadmaster BrakeAway kit, for the Brakemaster Supplemental Braking Systems. Now, this will add a little extra security to your towing experience. With the installation of this BrakeAway kit to your tow vehicle. This BrakeAway kit worked with the Roadmaster's Brakemaster System.

To ensure that your tow vehicle comes to a controlled stop should it ever separate from your motorhome. Basically, uses the air pressure in this air cylinder, to apply the brakes during a breakaway. Now, this kit will include everything I laid out here on the table. Comes with this air reservoir, the air line tubing. The rubber mounting clamps, to hold this cylinder in place.

The BrakeAway switch itself. The BrakeAway cable, and all the installation hardware you need to install it, with a nice set of instructions. How does this install in your tow vehicle The BrakeAway switch right here, is what is installed to the front of the tow vehicle. With this BrakeAway cable, being attached to the pin right here. And then, the other end goes to the motor home.

The air cylinder is mounted in the engine apartment, and supplies air to the tow vehicle's brake pedal for application of brakes. So basically, what happens if your tow vehicle would come detached from your motorhome, the cable, that was connected to your motorhome into this pin, it will pull that pin out of the switch, which will then activate the air pressure in this cylinder. To apply the brakes to the brake pedal in your tow vehicle. Now, this BrakeAway kit does come standard in the Roadmaster BrakeMaster kits Part # RM - 9060 and Part # RM - 9160. Both of those kits we do sell separately on our website.

This parts are made in the USA, but that should do it for the review on the Roadmaster BrakeAway kit, for the BrakeMaster Supplemental Braking Systems..

Customer Satisfaction Score:

Customer Reviews

Replacement Roadmaster Breakaway Kit for BrakeMaster Flat Tow Brake Systems - RM-8600

Average Customer Rating:  4.9 out of 5 stars   (19 Customer Reviews)

Replace the breakaway system of your Roadmaster BrakeMaster supplemental braking system.


Easy to install. Instructions were easy to follow.


Fairly easy to install


Very knowledgeable and courteous. Great products.


came in quickly. good folks to work with


We have bought many items from in recent years. Their service is always excellent and the products are spot-on.


Quality product. Easy to follow instructions. Exactly as described.


Installed this myself. It went very well, thanks to the videos available.


Product as advertised. Easy installatio n.


Works good


Excellent customer service and delivered in only a couple of days. Excellent product and best price I found. Highly recommend.


The breakaway system was easy to install, (it took about 4 hours), and hopefully it will never be needed.


Very good and reliiable product


Worked and installed as expected.


Complete and easy to install


Order this item for my 2007 H2 Hummer works great An was easy to install an fast shipping. What more could you ask for ????






Excellent service and delivery time.


See what our Experts say about this Roadmaster Accessories and Parts

  • Breakaway Kit Recommendation for Roadmaster BrakeMaster 9000 Missing Breakaway Kit
    What you need is the Roadmaster Brakeaway Kit part # RM-8600. This is the correct breakaway kit you'd need for your Brakemaster 9000.
    view full answer...
  • What Would Cause Roadmaster Brakemaster Kit to Drain Vehicle Battery
    The problem is definitely the breakaway pin being pulled out. When that's pulled it allows current to pass through it to push the brakes. Have you tried replacing that to see if the problem persists or goes away? Your fuse holder and fuse seem to be in good working order and would not need to be replaced.
    view full answer...
  • BreakAway Kit for RoadMaster BrakeMaster 9000 System
    Certain models of the Brakemaster 9000 Series included a break away system. If there is not one with the unit you purchased, it will need to be added separately. I recommend the RoadMaster BrakeAway Kit # RM-8600. This kit is designed to work with the BrakeMaster supplemental braking system and will work to bring your towed vehicle to a stop in the event of a separation.
    view full answer...
  • Roadmaster BrakeMaster Will Not Release After The Break Away Pin Was Pulled Out
    From what you are describing, you have one or two things that could be going on, but odds are it is the switch that is causing the issue. One way to test this will be to connect the 2 wires in the back of the actual switch. This will complete the circuit, which the pull pin should be doing, and will tell you immediately if it is the issue. If the brakes are now working properly, you will need to replace it with the Replacement Breakaway Switch # RM-650898. The removal of the pull pin can...
    view full answer...
  • Installing The Roadmaster RM-9160 On A 2005 Fleetwood Discovery 39L
    The brake relay valve should be located just above the rear axle of your 2005 Fleetwood Discovery 39L. In the attached installation video for the Roadmaster BrakeMaster System w BrakeAway for RVs w Air or Air Over Hydraulic Brakes - Proportional # RM-9160 you can see that the valve is mounted to the frame of the motorhome and should look like figure 10 from the manual.
    view full answer...
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  • Can a Roadmaster BrakeMaster Second Vehicle Kit be Installed at Home
    Installation of the BrakeMaster second vehicle kit, # RM-98200, can potentially be done at home if you have experience in auto motive projects. To give you some idea of what the installation requires I have included a link to the installation instructions for the BrakeMaster system. Since you will be installing a second vehicle kit the part of the instructions that applies to you is the section that takes place on the vehicle. You will probably also need a second break away kit, # RM-8600,...
    view full answer...
  • Where To Install Breakaway Cylinder for Roadmaster BrakeMaster On 1997 Jeep TJ
    I took a look at the Roadmaster BrakeMaster Braking System with BrakeAway part # RM-9060 and in regards to mounting the breakaway cylinder, the following instructions are given in the manual. "Choose a location for the air reservoir. The air reservoir is mounted in the towed vehicle, most often in the engine compartment, but it may be attached anywhere an air line can be routed from the top of the air reservoir to the front of the vehicle, and where the drain valve, at the bottom of...
    view full answer...
  • Does a Vehicle Being Flat Towed Need a Breakaway System
    When flat towing a vehicle the supplemental braking system being used will have a specific breakaway switch that goes with it. Supplemental braking is required by law in most states so if you are not using one you will want to look into getting one. The breakaway switches will not work with vehicle brakes directly because they are hydraulic and the switches work with electric systems. If you have a braking system, let me know which one it is and I can explain how a breakaway system gets...
    view full answer...
  • Cylinder Dimensions of Breakaway Kit for Roadmaster BrakeMaster
    For the Roadmaster Brakeaway Kit for BrakeMaster # RM-8600 the length is 12" inch and at the widest point where the mac valve is located is 5" inches and the cylinder is 2 1/2" diameter. We have a similar kit designed for use with motorhomes that have air brakes with the Demco SBS Air Force One part # SM99243.
    view full answer...
  • Air Lines to Use for Install of Demco Air Force One Braking on 2005 Winnebago Journey 32T
    For the supply air connection the green wire you circled is correct for installing the Demco Air Force One part # SM99243 that you referenced and the black wire you circled is correct for the service brake relay valve.
    view full answer...
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  • Breakaway Parts for the Roadmaster BrakeMaster Supplemental Braking System
    If you need the cable, we have # RM-8603. For the breakaway and pin itself use # RM-650898. If you can tell me which BrakeMaster unit you have and what parts you need from the breakaway portion I can determine if those parts are available.
    view full answer...
  • Supplemental Braking System That Operates Off of Motorhome Air Brakes
    It sounds like you are describing the Roadmaster BrakeMaster Braking System for RVs w/ Air or Air Over Hydraulic Brakes # RM-9100. It operates the brakes in your towed vehicle proportionally with the air brakes from your RV. It will press the brake pedal at the same time and with the same intensity as you do in your RV. It also comes with an LED display that mounts in your motorhome so you know exactly when the brake pedal on your towed vehicle is being pressed. You will need to use a...
    view full answer...
  • Replacement Solenoid and Breakaway Switch for Roadmaster BrakeMaster Systems
    We do have the 3-Way Mac valve solenoid for the BrakeMaster braking systems which does sound like the issue. It is # RM-450420. For the switch you can use any breakaway switch such as # HM20010 as an example because all it does is complete a circuit once the pin is pulled.
    view full answer...
  • Does 2nd Vehicle Kit For Roadmaster BrakeMaster Have Electronics
    For the BrakeMaster, the installation does involve wiring and an air reservoir. You do have one part of the set up with the RoadMaster BrakeMaster Replacement Air Cylinder # RM-9100-50 but you will also need a 2nd vehicle kit for the remainder of the install, as well as a custom seat adapter depending on what tow vehicle you have. The kit you need is the RoadMaster Second Vehicle Kit with BreakAway for BrakeMaster Systems # RM-98160. I have added a link below to the installation instructions...
    view full answer...
  • Replacement Parts for Roadmaster BrakeMaster 9000 Series Braking System
    If by pressure switch you mean just the break away switch for your Roadmaster BakeMaster 9000 then you can use part # RM-650898. For a complete BrakeAway Kit including the switch and air cylinder use part # RM-8600. If you refer to the Pressure Reducer we offer this as part # RM-900002. A page with many Roadmaster parts is linked for reference.
    view full answer...
  • BrakeMaster Seat Adapter and Tow Bar Wiring to Flat Tow a 2015 Ford F-150 Behind an RV
    The seat adapter listed for your 2015 Ford F-150 to use the BrakeMaster Supplemental braking system is # RM-88316. For a wiring kit you can use 4-diode set # RM-15267 if you want a permanent solution and will be doing a lot of flat towing. Or for occasional use you may be interested in the Roadmaster # RM-2120.
    view full answer...
  • Availability of a Replacement Pull Pin for Roadmaster BreakAway Systems
    We do have the replacement pull pin (key) for Roadmaster BreakAway systems. You will need part # RM-200200-20. It's also worth mentioning, we do have a complete replacement break away switch for Roadmaster break away systems, part # RM-650898. This part will include the switch and a new key as well. I've also included a link of our complete selection of breakaway pull pins for you to check out.
    view full answer...
  • Installation of Roadmaster BrakeAway Kit for BrakeMaster Supplemental Braking System
    The RoadMaster BrakeAway Kit for BrakeMaster Systems # RM-8600 will allow you to move it from one vehicle to another and you will simply use the instructions from the Roadmaster BrakeMaster Braking System with BrakeAway # RM-9060 or # RM-9160 which are attached. The wiring diagram for the breakaway switch is attached. Another option is to simply utilize a second vehicle using the RoadMaster Second Vehicle Kit for BrakeMaster Systems # RM-98100 or the Second Vehicle Kit with BreakAway...
    view full answer...
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  • Is a Supplemental Braking System and Breakaway Required for Flat Towing in the United States
    Yes, pretty much all states (with the exception of Missouri for some reason) and Canadian provinces require that a towed vehicle have a supplemental braking system and most all supplemental braking systems come with a breakaway unit. The most economical is the BrakeMaster # RM-9160 which works with RVs that have air brakes or air over hydraulic braking systems. Otherwise I recommend the SMI Stay-IN-Play DUO # SM99251. In either case these are proportional systems that apply the same amount...
    view full answer...
  • Breakaway Switch and Whole System for Roadmaster BrakeMaster Braking System # RM-9100
    If you have the rest of the breakaway system for the BrakeMaster # RM-9100 and just need to replace the switch then yes, you could use # FA80-00-2060 if you wanted to. If you do not have the rest of the breakaway system you will need # RM-8600 which comes with a switch and everything needed to add a breakaway system to the BrakeMaster # RM-9100.
    view full answer...
  • Availability of Replacement Parts for Roadmaster Brakemaster System, # RM-9160
    We have several replacement parts that are compatible with the Roadmaster Brakemaster Systems, like # RM-9160. If you look in the parts break down in the included instructions link, you can see the parts in the Brakemaster system. The RM-9160 did not come with a compressor, but the RM-9060 did. It can be obtained in the RoadMaster BrakeMaster Second RV Kit for Hydraulic Brakes, # RM-98300. The Brakemaster # RM-9160 had a break away kit that included some parts that looked like an air tank...
    view full answer...
  • Does Reservoir of RoadMaster BrakeAway Kit for BrakeMaster Have Specific Mounting Location
    It is definitely a smart idea to use the BrakeAway Kit # RM-8600 with your Roadmaster BrakeMaster although there is not necessarily a recommended spot we can offer to install the reservoir in a 2016 Ford C-Max. We have not had a chance to install this specific part in this specific vehicle, but I took a look at the owner's manual and since the air lines do need to be two feet away from a heat source like the engine, your best bet is off to the right (if you are facing the front of the car)....
    view full answer...
  • Can BrakeMaster Breakaway Kit be Easily Removed from One Vehicle to Another Vehicle
    Whether you have the Roadmaster BrakeMaster Braking System for RVs with Hydraulic Brakes # RM-9060 or the Roadmaster BrakeMaster System for RVs w Air or Air Over Hydraulic Brakes # RM-9160 you need to keep your breakaway system install on the Jeep Wrangler if you plan on still flat towing that vehicle. I reached out to my contact at Roadmaster who said that the breakaway kit is pressurized and so it needs to stay in a secured location and shouldn't be mounted on the air cylinder. If you...
    view full answer...
  • Complete Flat Towing Setup For A 1997 Ford Ranger
    The only way to use the RoadMaster BrakeAway Kit for BrakeMaster Systems # RM-8600 on your 1997 Ford Ranger, is to install the Roadmaster BrakeMaster Braking System with BrakeAway for RVs with Hydraulic Brakes # RM-9060. The Breakaway kit comes standard with the Roadmaster BrakeMaster System w BrakeAway for RVs w Air or Air Over Hydraulic Brakes # RM-9160 & # RM-9060. If you're still interested, either of these systems: # RM-9160 & # RM-9060, will work great with your 1997 Ford Ranger,...
    view full answer...

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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Amanda K
Updated by:
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