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Air Force One Air Force One

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Air Force One is truly an advance in towed-vehicle braking technology: proportionate, progressive, gentle, user friendly, and fits every towed vehicle with no modifications. Designed for diesel motorhomes, AFO is the smallest, most effective braking system available.  Follow the link below for more information.



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Stay-IN-Play Stay-IN-Play DUO

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Number one choice for gas powered rigs.  The Stay-IN-Play DUO supplemental-braking system is installed so there is no set up required for towing your vehicle. To get ready to tow you simply turn it on; that’s all. Turn it on... and tow.  The DUO energizes the towed vehicles power brakes so it is gentle and consistent.  It’s easy to see why Stay-IN-Play DUO is the number one choice.



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The SMI advtantage Our Product Advantages

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"Things that are different are not the same." A simple but true statement; ecspecially when considering a braking system for your towed vehicle. The advantages of our systems set us apart from the competition.



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Frequently Asked Questions FAQ

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How do I set up for towing? What system is best for me? Will I stop faster with an SMI? These and many more frequently asked questions.



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Our customers rave about our products

The ability to turn the unit off by releasing the brakes in the coach is really great.

We had several 6% or greater very long grades. I would start to brake lightly to control speed and after a short while the brake would engage, seemingly at just the right time. As speed decreased, I would simply lift my foot momentarily and the unit would turn off until I needed it again. Superb!!  I will tell all my friends!!

T.D., California