Fleet upfitting, RV, automotive, canopy

Supplemental Braking

Supplemental braking is becoming more and more common in today’s RVing world. It’s a good idea. Even a small SUV can weigh up to 3,000 lbs, and every pound counts. It’s good to know that extra weight of the vehicle in tow is not pushing you when you are trying to come to a quick stop, or even a moderate stop. It’s not only a good idea, it’s the law. All US states and every Canadian province have recreational towing laws.

At Trademasters, we are proud to be an exclusive Canadian dealer for Air Force One and Stay In Play Duo, SMI’s fabulously simple and easy to use braking systems.

The Air Force One, for air brake applications, is a 100% true proportionate brake system using the same air that is used to apply the coach brakes. This is the only way to get truly proportionate braking.

  • Simple and reliable
  • 100% true proportionate braking
  • No setup or take down.


Stay In Play Duo: Designed for hydraulic brakes, it combines the power of air pressure with the gentleness of vacuum to give you the fastest, most powerful, self contained brake system ever. No setup or take down, simply turn it on and go, it’s a unique fail safe system. Stay In Play actually has no physical connection to the motorhome.


Truly simple. Truly reliable. Truly affordable. Come in today, we would be happy to discuss with you why SMI is truly “the obvious choice” in braking systems.

View the towing laws for each state and province…

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TF: 1-877-878-5869

T: 604-792-3132

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Store Hours

Mon – Fri: 8:00am – 5:00pm
Saturday: 9:00am – 5:00pm
Sunday: Closed
Holiday Weekends: Closed


44467 Yale Road West
Chilliwack, BC
V2R 4H2 Canada
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Trademasters Truck Accessories is BC’s source for custom vehicle storage, towing and truck accessories.