THUNDERBOLT STRIP RED LED BLK
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 and 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, and be prepared to turn night into day.

Specs

  • Super Bright (50 Lumens) *Daytime Flash
  • Auto safe mode
  • Last Mode Memory
  • USB Remote Switch Compatible
  • Aero Post Compatible
  • USB Rechargeable

Sizing Chart

Read about Bike Fitting and Sizing on our blog!

This is a rough guideline and we recommend everyone get fitted at their local bike shop. For a quick guesstimate measure your inseam to the floor and select the size with a standover height about 1"-2" shorter than your inseam. Or, you know, come visit us at the shop!

4’ 4’2 4’4 4’6 4’8 4’10 5’ 5’2 5’4 5’6 5’8 5’10 6’ 6’2 6’3 6’4+
43 CM
47 CM
50 CM
54 CM
58 CM
61 CM
64 CM