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Extremely Bright For It’s Compact Size

CNC and Precision Laser Etched Aluminum Housing Component

50 Lumen Output On Daytime Flash – 7 Lighting Modes

Auto Safe Mode Adjusts Output To Maximize Battery When Low

Last Mode Memory

USB Rechargeable


Limited Lifetime Warranty
Serfas® warrants to the original purchaser that the product is free of defects in material, construction, and/or workmanship for the lifetime of the product.

Battery Warranty – One Year Coverage
Serfas® batteries are covered by a 1 year warranty from the original date of purchase.

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 True Series lights & be prepared to turn night into day.


  • 50 Lumen Daytime Flash
  • Auto Safe Mode
  • Last Mode Memory
  • USB Remote Switch Compatible
  • Aero Post Compatible
  • USB Rechargeable


  • Solid Modes:
    • High (25 Lumens): 1.5 hrs
    • Medium (15 Lumens): 2.25 hrs
    • Low (10 Lumens): 5.5 hrs
  • Flash Modes:
    • Daytime Flash (50 Lumens): 19.5 hrs
    • High Flash Slow (25 Lumens): 9.5 hrs
    • High Flash Fast (25 Lumens): 5 hrs
    • Low Flash (10 Lumens): 13 hrs
    • *Auto Safe Mode Extends Runtime an Additional 45 mins
  • Weight: 40 Grams w/ Bracket
  • Battery: 500 mAh Lithium Polymer