BT300 Tailbones

(5 reviews) Write a Review
1.00 LBS
BT300 Tailbones
  • Add both running light and stoplight function to rear signals
  • Will not interfere with OEM alarm behavior
  • Pigtail kit for wire-in installations also available
  • Custom builders use TailBones to eliminate taillight
  • 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



  • 5
    Didn’t believe it was this easy

    Posted by Bill on 14th Jun 2018

    So I have an older fat boy. 97. To install literally separate the harness and plug each end of the tailbone’s in and boom. Works perfectly.

  • 5
    more lights are better!

    Posted by Unknown on 11th Oct 2017

    i can appreciate the fact that this is very cool for customs providing left-n-right tail lights.....but on my ultra it provides 6 red lights on the back of the bike! very good safety oriented product. biketronics also made a module that made your spots into turn signals! just put in amber spot bulbs. it really gets attention on my bike.....they need to make this again. awesome products! also run their stereo stuff!

  • 5
    Best money I ever spent.

    Posted by Mario B. on 22nd Nov 2014

    Bought because of state inspection laws. Custom slicked fender on the dyna meant I had to have some other way to have brake/running light, because the side mount plate wasn't enough. 5 minutes and I was done, and worked like a champ.

  • 5
    Safer riding immediately

    Posted by Unknown on 8th Mar 2011

    Added the BT300 in about 30 seconds. It took the drab lighting on the back of my bike and turned it in to bright lights. It grabbs attention of drivers behind you with no worries! My friend saw it and is already ordering his....

  • 5
    "Bolts right on"!

    Posted by Unknown on 29th Oct 2010

    Couldnt be easier to install. No wiring diagram needed. Take the seat off, unplug one connector, plug in the "tailbones", put the seat back on and you're done! Works like it came from the factory without any glitches what so ever.
    This is my 2nd one. The first one started to malfunction after 5 years and Biketronics replaced it. No hassle, no charge. They really mean "Lifetime Warranty" and stand behind their product.

    2005 FXSTB