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SMI Stay-IN-Play DUO Braking System Test Course

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Customers compare SM99251 to these similar products




Products Featured in this Video


Demco SBS Stay-IN-Play DUO Supplemental Braking System - Proportional


Demco Tow Bar Braking Systems

386 reviews


Code: SM99251

Retail: $1,607.23

Price:  $1,175.00

  • Tow Bar Braking Systems
  • Brake Systems
  • Proportional System
  • One Time Set-Up
  • Fixed System
  • Power Assist Brake Compatible
  • Hydraulic Brakes
  • Demco



Get automatic, proportional braking with a system that never has to be removed, replaced, or reset. The DUO activates when your RV's brake lights go on and an inertia sensor in the towed car detects deceleration. No false braking.


Do you have a question about part SM99251?more information >     


Test Course with the SMI Stay-IN-Play DUO Braking System


So we're taking our RV out with our towed vehicle with the breaking system installed. The first thing you notice, that this proportional breaking system does is that when we're applying a little bit of break in the RV, we're getting the same amount of breaks being applied in our towed vehicle. If we're applying a lot of break pressure, we'll get the matching amount of pressure inside the towed vehicle as well. Bringing our towed vehicle to smooth and safe stop in an equal manner with our RV so we don't have to deal with feeling any jerking or pushing of the towed vehicle against the RV. We won't even really feel that it's back there.


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