Biketronics Tailstopper BT400

$89.99 USD
This is a great add on...Better and more Impact, I believe, that a run/brake/turn add on where the turns are always on, then just brighter for braking. Nothing catches people's attention more than a completely dark light that comes on when you brake. This unit makes your turn signals function like a car's third brake light. See Attached video on our 2006 FLHTCUI with our Super Bright RED LED's installed.



  • Add stoplight function to rear turn signals
  • Does not change OEM alarm behavior
  • OEM connectors provide Plug-N-Play simplicity
  • Unusually small size – perfect for motorcycle applications
  • Automotive quality package using mil-spec epoxy
  • Engineered and produced in the United States
  • Limited Lifetime Warranty


  • BT400 SoftTail 1996 – 2013
  • BT400 FL/Dyna 1997 – 2013
  • BT400 XL 99-03

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