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Aventon Tail Light W08-40A


Our Aventon Tail Light offers a fast and convenient way to increase your safety when riding in low conditions. Offering a variety of modes and attention-grabbing flash patterns, you'll always be visible to others. Easily mount it to your seat post with an integral rubber strap, making installation and removal a flash.


  • USB Rechargeable, built-in 680mAh battery
  • Flashing, Steady (solid red), and Daytime Flash modes
  • Power-saving mode: if the light does not detect motion for more than 120 seconds, it will enter sleep mode, then power back on when motion is detected.
  • IPX6 waterproof rating
  • Just 40.6 grams!

Runtime and Lumen Output

  • High Steady: 40 lumens, about 3.5 hours of runtime
  • Medium Steady: 20 lumens, about 5 hours of runtime
  • Low Steady: 5 lumens, about 33 hours of runtime
  • High Flashing: 40 lumens, around 18 hours of runtime
  • Low Flashing: 5 lumens, around 85 hours of runtime
  • Daytime Flash: no lumen output, about 25.5 hours of runtime


Works with Aventon Pace series, Level, Sinch, Aventure, and Soltera ebikes. Also fits most other makes/models of bikes that use a round seatpost. 

What People Are Saying

Customer Reviews

Based on 115 reviews
Aventon Tail Light

Awesome super bright light. Better than any tail light that you can buy online. Perfectly mounts to the slanted seat post at the correct angle.

Glad this item worked out for you, Michael! Thanks for the review!

Drivers will see you!

Bright safety light makes you visible to drivers night and day. Can attach anywhere on bike, or helmet where use it.

That's great to know, thank you!

Robert Witmer
Tail lights

Bright. Easy install. Various light displays.

Hi Robert,

Thank you for your feedback!


Steve Prokop

Works great. Also Could be made to screw onto the back of the bike rack instead of attaching to the seat post. If there is a bag mounted to the back rack the light can’t be seen.

Hi Steve,

Thank you for your feedback! We're glad to hear that the tail light is working great for you. We appreciate your suggestion about making it compatible with the back of the bike rack. Enjoy your rides and stay safe!


Lee Lesperance
Aventon tail light

I charged this light, put it on my bike, turned it on, and it worked well. This was my expectation. A good value.

Hi Lee,

Thank you for taking the time to leave us a review! We're glad to hear that you're satisfied with your tail light and that it met your expectations. We appreciate your support and hope that you continue to enjoy using our products!