TST-100 Scorpius 100 (100 Lumens)


Out stock
SKU: TST-100 / 713835033630

Quick Overview

Closeout Item – Dealers, Please Contact Your RSM For Pricing Details

The Serfas® True Series light line was developed to be the best on the market. Given the True stamp of approval, these tail lights will meet & exceed their expected lumen output while offering you all the features you’ve come to enjoy from Serfas® lighting. Please welcome the new line of Serfas® True Series lights & be prepared to turn night into day.

Out of stock



  • 30 High Powered Micro LED Ring For Greater Visibility
  • Auto Safe Mode
  • Last Mode Memory
  • USB Remote Switch Compatible
  • Aero Post Compatible
  • Saddle Rail Mount Included
  • USB Rechargeable
  • Solid Modes: High (50 Lumens): 1.5 hrs, Medium (25 Lumens): 2.75 hrs, Low (15 Lumens): 4.75 hrs
  • Flash Modes: *Daytime Flash (100 Lumens): 24 hrs, High Flash Slow (50 Lumens): 11 hrs, High Flash Fast (50 Lumens): 7.5 hrs, Low Flash (15 Lumens): 25 hrs, Auto Safe Mode Extends Runtime an Additional 45 mins
  • Weight: 53 Grams with Bracket
  • Battery: Lithium Polymer

Scorpius 100 Instructions

2 reviews for TST-100 Scorpius 100 (100 Lumens)

  1. Vincent Servin

    This is by far the best tail light that I have ever used! I do a lot of commutes on my road bike and cycling tours as well, and having a dependable tail is very important to me. Serfas by far makes the most dependable and brightest tail lights that I have ever seen and used. The Scorpius 100 is very dependable on long tours- I’ve done 9-12 hour days on the saddle the Scorpius held its own on a single charge. The Scorpius not only holds its charge but also makes everyone behind know that you’re there because of its intense brightness(on it’s highest setting) in both night and day. One of its other amazing features, that i find to be unique, is the auto on/off settings- this feature is easy to activate/disactivate. This setting is really convenient when you’re out on long rides and you do not want to worry about turning on the light so that you can focus on your ride. One less thing to worry about! And for those who are worried about weight… It’s surprisingly very light!!!

  2. AaronG

    What a great little tailight! I have one on my mtn bike. It’s small and brilliant for my on/off road trips in the evenings. Love all the options of intensity and various flash modes along with the non flash modes. Great little light, easy to turn on and off and easily removed w/ quick release mount. It also comes with a very solid saddle rail mount also.

    • Serfas

      Hi Aaron, Glad to hear you’re enjoying the versatility and high-output of the compact Scorpius 100 taillight! Small light with a big sting! Thanks for sharing your feedback and enjoy your rides! – The Serfas Team

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