Parts Needed to Use the Roadmaster InvisiBrake Flat Tow Brake System In Two Separate Vehicles
Updated 09/29/2025 | Published 09/10/2025
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Question:
I want to move my roadmaster invisabrake 8700 control box between two vehicles. In the second vehicle install kit I don’t see the cylinder or mounting hardware. Is this just missing from photos or do I need more
asked by: Bob
Expert Reply:
Hey Bob. Those parts are available separately but are not included in the Second Vehicle Kit for Roadmaster InvisiBrake Flat Tow Brake System item # RM-98700. To move the Roadmaster InvisiBrake Flat Tow Brake System item # RM-8700 back and forth to a second vehicle you'll also need the following parts:
Replacement Air Cylinder for Roadmaster Even Brake Flat Tow Brake System item # RM-452109-10
Replacement Cable for Roadmaster InvisiBrake Flat Tow Brake System item # RM-452109
Replacement 1/4" Vacuum Check Valve for Roadmaster InvisiBrake Second Vehicle Kit item # RM56RR
What's your 2nd tow vehicle?
Product Page this Question was Asked From
Roadmaster InvisiBrake Flat Tow Brake System - Preset
- Flat Tow Brake System
- Brake Systems
- Pre-Set System
- One-Time Setup
- Vehicle Battery
- Fixed System
- Power Assist Brake Compatible
- Air Brakes
- Hydraulic Brakes
- Indicator Lights
- Roadmaster
more information >
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Jerred H.
9/29/2025
Hey Bob, did you have a chance to gather the parts needed to move your InvisiBrake system between vehicles? I'm asking because it could help others who want to do the same.