Blade rear bike light switched on, three-quarter view showing the red rear lens and amber side light
Blade rear bike light mounted on a seat post above the rear wheel, side view
Close-up of the Blade bike tail light on a seat post, showing the red lens from the side
Blade bike tail light under a saddle, seen from above, with green battery indicator lights showing
Bike leaning against a stone wall at night with the Blade tail light casting red light across the ground
Bike seen from directly behind with the Blade rear bike light lit on the seat post
Blade bike tail light side view with the seat post clamp attached and the amber side light visible
Blade rear bike light glowing on a seat post at dusk, close-up from the side
Straight-on rear view of a road bike with the Blade tail light lit below the saddle
Bike parked beside wooden chairs at night with the Blade rear tail light glowing red
Close-up of the Blade bike tail light glowing on a seat post at night, with string lights in the background
Blade bike tail light rear three-quarter view of the red lens and clear side window
Blade rear bike light straight-on view of the red lens
Blade rear bike light three-quarter view showing the red lens and the quarter-turn mount on the back
Blade bike tail light side view showing the quarter-turn mount interface
What comes in the box with the Blade tail light: hex wrench, seat post shims, the light and the seat post clamp
Blade rear bike light mounted on the seat post of a gravel bike with a frame bag
Blade bike tail light mounted on a seat post under the saddle, rear three-quarter view
Blade tail light seen from above the saddle, showing its green battery level indicator

Blade Rear Tail Light

  • Road focused tail light with incredible side visibility and safety.

Regular price$125.00 USD
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Shipping calculated at checkout.
  • In stock, ready to ship
  • Inventory on the way

Blade, it was what our internal project name was for this light due to it's unique light looking design. We are terrible at names, so we stuck with it. Designed to look and perform like an automotive tail light, rather than just another cheap plastic blinking light.

  • Incredible amber side visibility designed to make you visible when it matters most, as vehicles come alongside you with a bright amber light.
  • Downward projecting red light that lights up your legs as you move, increasing your lit visibility from a distance.
  • Replaceable 18650 battery designed to let you replace the battery years down the road without sending it to us. A few simple instructions and a torx is all you'll need.
  • USB-C charging to simplify your collection of cables and bring tail lights to the modern standards.
  • Simple user interface with a large button and easy to read status lights. It's a tail light, not rocket science
  • Dead reliable, backed by a 3-year warranty and incredible customer service so you can feel confident every time you hit the road.
  • Incredibly fast shipping straight from our production floor to you.
  • Designed, engineered, assembled, and shipped from Chicago, IL.
Blade Rear Tail Light

Blade Rear Tail Light

× 1

Tail Light Seat Post Mount

Tail Light Seat Post Mount

× 1

USB C-to-A Cable

USB C-to-A Cable

× 1

MountingSeat post
ApplicationRear light for road, gravel and commuting
Runtime8 to 120+ hours
See the Runtime section below
ChargingUSB-C
OutputUp to 300 lumen peak
Battery3.6 V 3,500 mAh 18650 (12.6 Wh)
Weight125 g
Instruction manualDownload PDF
ModeOutputRuntime
High250 lm combined8+ hr
Low125 lm combined16+ hr
Daytime Flash300 lm peak32+ hr
Nighttime Pulse150 lm peak16+ hr
Eco Flash125 lm peak~120 hr

Reviews

What riders say
about the Blade Rear Tail Light.

What If Your Car's Tail Light Could Fit on Your Seatpost?

Same automotive engineering, except for your bike and your safety.

Seen From The Side.

The most dangerous moment isn't from miles behind, it's when a car is beside you. Blade fires pure amber from both sides, taking cues from automotive side marker lights. No laughable little dots. Real visibility.

Never Think About Battery Again.

Most tail lights ship with a tiny coin cell or a minuscule lithium pack. We said no. Blade runs a full-size 18650 battery, the same cell that powers laptops, so your runtime is measured in rides, not hours.

One Button. Zero Confusion.

One big textured button in the center of a soft-touch shell. Status lights tell you what mode you're in. You won't need to read a manual, and you won't accidentally change modes mid-ride. It just works.

Frequently asked questions

What seatposts does the mount fit?

Round posts from 27.2 mm to 31.6 mm, straight out of the box. That covers most road, gravel and hardtail bikes. The mount itself is a bit fiddly to install and remove, so leave it on the bike and pop the light off to charge.

I have an aero or D-shaped seatpost. What are my options?

Blade uses the same quarter-turn interface as Garmin, so any Garmin-compatible mount works. For aero and D-shaped posts, Sheehy Labs 3D-scans and makes quarter-turn mounts for a huge list of specific bikes and posts. That's who we point people to, and we've been working with them on it.

Can I mount it to a rear rack, saddle bag or pannier rack?

Not out of the box, but because the interface is a standard Garmin quarter-turn, rack mounts from KOM Cycling, Jefe.bike and others bolt right on. Measure the bolt spacing on your rack first. No saddle-rail mount from us yet; the optic wants to sit high and vertical, and most saddle mounts put it low and tilted.

Can I mount it sideways or upside down?

You can, but don't. The optics are tuned for vertical, upright mounting so the light spreads to make you visible from behind and from the side. Sideways it turns into a glare bomb. If a vertical mount won't fit your bike, email us the details and we'll figure something out.

Does it have a brake light? Is it a good daytime running light?

No brake light or accelerometer. We stuck to what we're good at, which is optics and electronics that put functional light exactly where it needs to be. As a daytime running light it's excellent: bright amber side markers like a car, and a rear beam that's visible from a long way off without pointing a hotspot into drivers' eyes.

outbound lighting employee photo tomoutbound lighting employee photo tom

Industry-Best Customer Support

3 year warranty + Lifetime customer service support backed by a real person. (yes, that's Tom)