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RoadMaster BrakeMaster Replacement Air Cylinder

RoadMaster BrakeMaster Replacement Air Cylinder

Item # RM-9100-50
Our Price: $409.94
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Roadmaster Air Cylinder Accessories and Parts - RM-9100-50
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Replacement air ram cylinder for BrakeMaster supplemental braking systems. 1-833-496-1390 to order Roadmaster accessories and parts part number RM-9100-50 or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for RoadMaster BrakeMaster Replacement Air Cylinder. Accessories and Parts reviews from real customers.
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  • Reviews (12)
  • Q & A (0)
  • Videos (1)
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Roadmaster Accessories and Parts - RM-9100-50

  • Tow Bar Braking Systems
  • Air Cylinder
  • Roadmaster

Replacement air ram cylinder for BrakeMaster supplemental braking systems.


  • Is compatible with BrakeMaster supplemental braking systems (RM-9060, RM-9100, and RM-9160)
  • Made in the USA

9100-50 RoadMaster Replacement BrakeMaster Cylinder

Video of RoadMaster BrakeMaster Replacement Air Cylinder

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

Video Transcript for Roadmaster Tow Bar Braking Systems RM-9100-50 Review

Speaker 1: Today we're going to take a look at the Roadmaster Brakemaster replacement air cylinder. Now, this air cylinder is compatible with Brakemaster supplemental braking systems, part number RM-9060, RM-9100, and RM-9160. All three of those systems we do sell on our website.This air cylinder uses the air pressure from your motor home to depress the tow vehicle's brake pedal. Basically, you connect the air cylinder before towing, and then you disconnect it when you reach your destination. It connects and disconnects from the tow vehicle in under a minute without any tool, adjustments or setting. Basically, this clamp right up here, you attach this to the brake pedal on your vehicle, secure it to the floor right back here with this pin and clip, or to the seat adapter, whichever you use, and then you quick connect your air hose right here, and you're all set to go.

It will apply your brakes when you apply the brakes in your motor home.This part is made in the USA. But that should do it for the review on the Roadmaster Brakemaster replacement air cylinder.

Customer Satisfaction Score:

Customer Reviews

RoadMaster BrakeMaster Replacement Air Cylinder - RM-9100-50

Average Customer Rating:  5.0 out of 5 stars   (12 Customer Reviews)

Replacement air ram cylinder for BrakeMaster supplemental braking systems.


Item includes everything in photo - pedal clamp, air release valve, tubing, and adjustable post with locknuts and locking pin, as well as cylinder. Mine came without a label or serial number - the one it replaced lasted 20 years and still works (with one air release valve replacement 5 years ago).


Received and installed brake actuating cylinder in a GEO Tracker.
Easy, seems to work fine. Thanks for a reasonable price.

If you want just the cylinder the part number is rm-450600.http:/
-- comment by: JT - 10/08/2015


Great price, fast delivery, exact replacement of the one I lost or had stolen.


It works and we can roll!!


Received order lightning fast, I will always use etrailer for all my towing needs.


part came as advertised, on time, great people to deal with!!!!


I was amazed at how quick I received the item! I have not installed it yet, but I will shortly. Everything looks great


I am very pleased with this transaction. George was very helpful. Order processing was over the top quick and professional. Part I needed was in stock. Pleasure to work with y’all.






See what our Experts say about this Roadmaster Accessories and Parts

  • Availability of Replacement Brakemaster Air Cylinder
    Roadmaster does offer just the replacement cylinder setup you are swapping between vehicles for the Brakemaster with the part # RM-9100-50. The price is down below at the product link.
    view full answer...
  • Quick Disconnect Air Line Kit for BrakeMaster
    We do offer a Quick Disconnect Kit for Brakemaster, part # RM-921004-50. This includes the male fitting, bracket and chain with weather cap.
    view full answer...
  • Replacement Air Cylinder for Roadmaster BrakeMaster Braking System
    Yes, the repalcement air cylinder for RoadMaster Brakemaster (parts # RM-9060, # RM-9100, and # RM-9160) is # RM-9100-50. This includes the cylinder, pedal clamp assembly, air tube and floor plate.
    view full answer...
  • Replacement Air Cylinder Recommendation for Roadmaster Brakemaster That Won't Release
    I spoke to my contact at Roadmaster and he told me that most likely your problem is a bad air cylinder. He said you can test this by removing the air cylinder and taking it back to the quick disconnect at the rear of you RV. Depress and release the brake pedal. If the cylinder doesn't extend and retract it is bad and needs to be replaced. The replacement air cylinder is the part # RM-9100-50.
    view full answer...
  • Solution for Leaking Air Cylinder of Roadmaster BrakeMaster
    If the air cylinder of your BrakeMaster setup is leaking air you would need to replace it with the part # RM-9100-50. Roadmaster does not offer a rebuild kit for this system.
    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 Needed to Connect Brakemaster Supplemental Braking System to RV with Air Brakes
    In addition to the RoadMaster BrakeMaster Replacement Air Cylinder # RM-9100-50 to connect the RV's brakes to your Jeep Grand Cherokee all depends on what you already have. The Jeep will need the air lines and wiring installed in it, if it isn't already. If not you'll need # RM-98100. The kit to install into the RV, if it needs it, is # RM-98200. The air line to connect the two together is # RM-921004-88. Depending on how much of the pieces you need, and which system you have, it may...
    view full answer...
  • How To Transfer the Roadmaster BrakeMaster System RM-9160 To a New Vehicle
    In order to transfer the Roadmaster BrakeMaster System part # RM-9160 from one vehicle to other you'd need the RoadMaster Second Vehicle Kit part # RM-98160 which is assuming you have the RoadMaster BrakeMaster Replacement Air Cylinder part # RM-9100-50. In regards to the seat adapter, you'll need to use the RoadMaster BrakeMaster Custom Seat Adapter part # RM-88287 on a 2014 Jeep Grand Cherokee.
    view full answer...
  • Parts Needed To Use Roadmaster BrakeMaster Breaking System On RV With New Towed Vehicle
    Congratulations on the new RV! To allow you to use the Roadmaster BrakeMaster Braking System with BrakeAway for RVs with Hydraulic Brakes # RM-9060 that is installed on your RV with your 2017 GMC Sierra 2500 HD you will need the RoadMaster Second Vehicle Kit with BreakAway for BrakeMaster Systems # RM-98160, Roadmaster Stop Light Switch Kit # RM-751463, and Roadmaster BrakeMaster Custom Seat Adapter # RM-88308. If you do not have the air cylinder you will also need the RoadMaster BrakeMaster...
    view full answer...
  • Motor Home Side Female Air Line Quick Disconnect for Brakemaster Braking System
    You can get both sides of the quick disconnect for the Brakemaster braking system using part # RM-921004-80. Or for the female end with the L-shaped mounting bracket use # RM-921004-60. Or for just the female fitting use # RM-450710.
    view full answer...
  • Can Rest of the Parts Be Obtained for the Roadmaster BrakeMaster If You Only Have Air Cylinder
    If you only have the Roadmaster BrakeMaster Air Cylinder part # RM-9100-50 (With Brake Pedal Clamp) then you'd need the Replacement Cord part # RM-921004, Second Vehicle Kit with Breakaway part # RM-98160, and Second Vehicle Kit for Air Brakes part # RM-98200. This would end up being around the same cost as the Roadmaster BrakeMaster System part # RM-9160 so that's up to you. Please note, in order to use the Roadmaster BrakeMaster System on a 2019 Chevrolet Equinox you'll need both the...
    view full answer...
  • Parts Needed To Use Roadmaster Brakemaster Air Cylinder In New Vehicle and Motorhome
    If you want to use the Roadmaster Brakemaster cylinder part # RM-9100-50 that your friend gave you I have listed the parts below that you will need to use it in the Lincoln. I highly recommend to use the custom seat adapter because if not you will need to drill holes through the floor board of your brand new Lincoln if you use the Universal Floor mount your friend gave you. The stop light switch is needed in the Lincoln to protect the system just in the case that something with the braking...
    view full answer...
  • Parts Needed To Flat Tow a 2020 Ford F-150
    In order to flat-tow a 2020 Ford F-150 you will need a base plate kit, tow bar, flat-tow wiring harness, supplemental braking system, and possibly a few other items. I have attached a list of these below. etrailer Invisible Base Plate Kit part # e98961 etrailer XHD Non-Binding Tow Bar part # e94ZR Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25 Roadmaster Brake-Lite Relay Kit for Towed Vehicles...
    view full answer...
  • Equipping 2014 Chevy Equinox for Use w/ Roadmaster Brakemaster 9000
    Assuming that the motorhome is good to go, you'll need to following to equip your 2014 Chevy Equinox with the Brakemaster braking system: Brakemaster 2nd Vehicle Kit, part # RM-98160 Brakemaster Seat Adapter, part # RM-88280 Stoplight Switch Kit, part # RM-751439 Fuse Bypass, part # RM76511 Umbilical, part # RM-921004 If you don't have the Ail Cylinder that Mounts to the floor of the towed vehicle and pushes the brake pedal, you'll also need # RM-9100-50 If you haven't yet wired the...
    view full answer...
  • Parts Needed to Flat Tow a 2008 Dodge Ram 1500 or 2009 Wrangler Using a Roadmaster Falcon 2 Tow Bar
    It sounds like you have a Falcon 2 Tow Bar # RM-520 that came with your Class A motorhome. The Falcon 2 is rated up to 6,000 pounds so you'll want to make sure your Ram doesn't exceed that. Depending on how its equipped it very well may. Also, make sure your RV is rated high enough to tow the Ram. What you need on your 2008 Dodge Ram 1500 is a base plate kit that will connect to the tow bar. If your truck is a MegaCab # 277-1A will work for you and if you the truck isn't a MegaCab...
    view full answer...
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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Adam R
Expert Research:
Adam R
Employee Jeff D
Installed by:
Jeff D
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B

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