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  3. Tow Bar Braking Systems
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Replacement Air Cylinder for Roadmaster BrakeMaster Flat Tow Brake System

Replacement Air Cylinder for Roadmaster BrakeMaster Flat Tow Brake System

Item # RM-9100-50
Our Price: $441.42
Accessories and Parts

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Shipping Weight: 4 lbs
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Replace the actuator of your BrakeMaster supplemental braking system. 1-800-940-8924 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 Replacement Air Cylinder for Roadmaster BrakeMaster Flat Tow Brake System. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (16)
  • Q & A (0)
  • Videos (1)
  • Photos

Roadmaster Accessories and Parts - RM-9100-50

  • Tow Bar Braking Systems
  • Air Cylinder
  • Roadmaster

Replace the actuator of your BrakeMaster supplemental braking system.


  • Replaces the actuating cylinder of your BrakeMaster braking system
  • Made in the USA


  • Roadmaster BrakeMaster supplemental braking systems:
    • RM-9060
    • RM-9060-900002
    • RM-9100
    • RM-9100-900002
    • RM-9160
    • RM-9160-900002

9100-50 Replacement Road Master Brake Master Supplemental Braking System Actuating Cylinder

Video of Replacement Air Cylinder for Roadmaster BrakeMaster Flat Tow Brake System

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

Replacement Air Cylinder for Roadmaster BrakeMaster Flat Tow Brake System - RM-9100-50

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

Replace the actuator of your BrakeMaster supplemental braking system.


We bought a motorhome that already had the BrakeMaster system installed, we just needed the cylinder, attachment bar and air line. Perfect!


It looks great. I can't hook it right now, MH is in repair shop right now. But, it appears to be just what I needed. Mine had list compression. Shipping was fast,first time ordering from Etrailer but will diffinately use them again if needed.


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:/


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).


It works and we can roll!!


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


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


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.



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


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







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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
Employee Amanda K
Updated by:
Amanda K

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