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Replacement Breakaway Switch Pin for Demco SBS Supplemental Braking Systems

Replacement Breakaway Switch Pin for Demco SBS Supplemental Braking Systems

Item # SM99905
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SM99905 - Hardware Demco Tow Bar Braking Systems
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Replaces the pull pin on the breakaway switch that came with your Demco SBS Air Force One (SM99202 or SM99243) or Stay-IN-Play Duo supplemental braking system (SM99251). 1-833-496-1390 to order Demco accessories and parts part number SM99905 or order online at Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Replacement Breakaway Switch Pin for Demco SBS Supplemental Braking Systems. Accessories and Parts reviews from real customers.
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Demco Accessories and Parts - SM99905

  • Tow Bar Braking Systems
  • Hardware
  • Demco

Replaces the pull pin on the breakaway switch that came with your Demco SBS Air Force One (SM99202 or SM99243) or Stay-IN-Play Duo supplemental braking system (SM99251).


  • Replaces the pull pin on the breakaway switch that came with your Demco SBS supplemental braking system
  • Works with Air Force One (SM99202 or SM99243) and Stay-IN-Play Duo (SM99251)

16030 Demco SBS - (Formerly SMI) Replacement Break Away Plug for Air Force One or Stay-IN-Play Duo Supplemental Proportional Braking System

Replaces Demco SBS SM99905

Video of Replacement Breakaway Switch Pin for Demco SBS Supplemental Braking Systems

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

Video Transcript for Demco SMI Supplemental Braking System Replacement Breakaway Switch Pin Review

Jake: Hey, guys. It's Jake here with etrailer. Today we're going to be taking a look at the replacement pin for your SMI braking system.In our case here, we had a customer who had a breakaway, and the tow vehicle had separated from the towed vehicle, and he lost the breakaway pin. So, he's picking up a new one. To replace this, you just slide it back in and replace your cable. This is very important to have, because otherwise, your system's not going to work.You want to make sure you keep your pin in good condition, so whether that's you've lost one, you've broken one, or it's just gotten older and brittle and you need to replace it.

It's a simple and small enough part to keep on hand for those longer trips, so you might want to go ahead and pick up a couple of them when you get your system or when you get a replacement.Then of course before you leave, you want to make sure you hook up your safety cable and you're ready to hit the road. With that being said, that's going to do it for our look and installation of our SMI replacement pin.

Customer Reviews

Replacement Breakaway Switch Pin for Demco SBS Supplemental Braking Systems - SM99905

Average Customer Rating:  4.9 out of 5 stars   (167 Customer Reviews)

Replaces the pull pin on the breakaway switch that came with your Demco SBS Air Force One (SM99202 or SM99243) or Stay-IN-Play Duo supplemental braking system (SM99251).


Fantastic service from a fantastic company. Mahalo


I ordered the Break away switch pin. It arrived quickly and was exactly what I ordered. I use it as a back up. However, I did test it to make sure it would work for my Stay and Play braking system for my tow vehicle.


Quick delivery quality products


The part was exactly what I wanted. It was easy to find and order on the etrailer website. The items were shipped timely and communication from etrailer was outstanding.


Received everything we needed to install on our coach. Instructions were very plain and easy to follow. This was my 2nd unit to install, I highly recommend these products, they are easy to install and they work very well.


purchased as a spare in case something happens to our regular switch pin


It’s a pin. A very hard pin to find.

Works great glad I got a backup.
Michael - 07/27/2022


Needed a spare switch just in case.


Absolutely satisfied with the product as well as the service. Thanks a bunch.


We bought to have it as an emergency spare part. Service was quick as well as delivery.


Lost my breakaway switch pin for my car probably threw it away with junk in my pocket. Researched and ordered the item with this company. They let me know the status from receiving it to shipping. The part was received and fit perfectly


This item works fine. but the price about doubled from the last time I purchased one. There is a real problem with these getting stolen.


Ordered these as spares because i know its only a matter of time before I loose the originals! Quick and easy ordering and delivery


EXCELLENT: Product is exactly what I needed and wanted.


Fast and accurate order. Very understanding of parts and knowledge.


I was advised to have a back up Breakaway Switch Pin for our Air Force One braking system. This pin works perfect and I will keep it with the car in the event the present one gets damaged or loss. etrailer sent it out quickly and now I have a backup to keep in our tow car. I would recommend getting a back up pin.


What can I say? It’s an exact factory replacement part.


It is the standard breakaway switch.

Works as it should. You dont need to have it installed to drive the tow vehicle, if you turn off the Stay N play system.
mark K - 08/22/2021


Part exactly as described. Prompt shipp ing.


Exactly as described. Fast shipping.


The product is excellent! I found etrailer to order a spare. The process was easy and quick. I received updates on my order throughout the process. I recommend etrailer.


worked great, very fast shipping.


I ordered 2 as back-up. Works excellent. Quick response and shipping.


Product was exactly as it was displayed. Shipping was fast, Product was a little expensive, but we needed it in a hurry, so we paid the price!


I ordered an extra breakaway pin to keep as back up after installing a Demco Stay-in-play brake system I am very pleased with the Demco brake system and also with the prompt and accurate service provided by in providing the breakaway pin. Great service. Thanks.

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Info for this part was:

Employee Jackie C
Expert Research:
Jackie C
Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Kathleen M
Installed by:
Kathleen M
Employee Jacob H
Installed by:
Jacob H
Employee Laura H
Written by:
Laura H
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F

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