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UTL-6 Thunderbolt USB Tail Light

UTL-6 Thunderbolt USB Tail Light

Regular price $36.00 USD
Regular price Sale price $36.00 USD
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The Serfas® UTL-6 Thunderbolt Tail Light gives you style and safety in one high-powered & affordable package.

Being seen on your bike at night never looked so good with Serfas' Thunderbolt (UTL-6) Taillight. USB rechargeable convenience and 35 lumen output while giving riders versatile mounting options.



  • 35 Lumen High/High Flash
  • USB Rechargeable
  • Charge Indicator Light
  • Removable Straps Allow Endless Mounting Options
  • LED Strip Creates a Non-Directional Flood Of Light




  • Modes:
    • High - 35 Lumens, 1.5 hrs
    • Low - 10 Lumens, 4 hrs
    • High Flash - 35 Lumens, 2.5 hrs
    • Low Flash - 10 Lumens, 8.5 hrs
  • Weight: 48 Grams With Bracket
  • Battery: 500 mAh Lithium Polymer
  • Color: Black

UTL-6 User Manual & Runtimes

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.

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