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Sentry Aero 260 Tail Light

3 out of 5 stars
6 Reviews



Why We Like The Sentry Aero 260 Tail Light

When it comes to the Sentry Aero Tail Light, the versatility is what we like most. First off, it's bright. 260 lumens is bright enough to be seen clearly in the daytime, and combined with the 260-degree visibility it's hard to be missed out on the road. Secondly, it mounts to both standard and aero seatposts, so it fits pretty much any bike from commuting rigs to high-end race bikes. The Sentry sports six different modes capable of running between 4.5 and 30hrs, and it comes wrapped in an aerodynamic casing that looks sleek on your favorite steed.



  • A bright, aero-shaped tail light for road cycling
  • High output for day and night time visibility
  • Unique aero shape with 260-degree visibility
  • Mounts to standard and aero seatpost shapes
  • Six modes including Daylight Visible Flash
  • USB-rechargeable with 2.5 recharge time
  • Meets IP64 rating for dust and water resistance
  • Group Ride Mode lets you be seen without distracting fellow riders
  • Item #NRI003R
dual LED light strips
Power Source
USB rechargeable
Batteries Included
6 different modes
Burn Time
[min] 4.5hr, [max] 30hr
water resistant
LED tail light, aero seatpost mount, standard seatpost mount, charge cable
Claimed Weight
2.3oz (65g)
Manufacturer Warranty

Overall Rating

3 based on 6 ratings

Review Summary

1 Stars - 2 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 2 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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1 out of 5 stars

December 18, 2021

If I could give it zero stars I would

I've put it through the wringer

Not water proof - or resistant enough and doesn?t meet the demands of training. Nice fashion statement.


Originally reviewed on Backcountry.com

2 out of 5 stars

August 20, 2021

Pretty Useless in Daytime

I've used it several times

I bought one b/c I wanted more side visibility on my commute. Turns out in daytime conditions there was virtually no side view visibility, and I wasn't impressed w/the back flash either.

genp1157571 g
4 out of 5 stars

January 20, 2021

Bright aero tail light...

I've used it several times

I like this light for my aero seatpost a lot more than the Specialized Stix. The mounting bracket fits the sharper edge a lot better. As for the light, not only is it bright, but you can see it on the sides. It mostly stays in place, but sometimes it slides a little sideways. That's the only reason I gave it four instead of five stars. That said, if you have an aero seatpost and need to be seen at night, this is a really good product.

Travis B
1 out of 5 stars

December 22, 2020

NiteRider Taillights... NO

I've put it through the wringer

Over eight to ten years for two bikes, I purchased three or four NiteRider headlights and at least as many NiteRider taillights& based primarily on the tech specs. Early ones were not rechargeable, later ones rechargeable. Now questioning, er... abandoning, my brand loyalty. One taillight simply stopped working (Cherry Bomb), another had the clip mount crack off, and the most recent one never lived up to the charging specs out of the box and quickly got worse from there (Solas). I'm a pride-of-ownership kinda person, take care of my stuff, have been anything but "hard" on these lights, and they've been unsatisfactory. Without getting into the details, let's just say my interaction with NiteRider customer support was less than satisfying. Zero, zip, nada appreciation for my loyalty. The latest OLED headlight still works fine after two seasons. But I'd steer as far away as I could from their taillights. Longevity sucks. I'm likely to opt for the Specialized Stix Elite 2 Taillight or the Lyzene Strip Drive Pro Tail Light to replace the latest NiteRider that broke.

Paul K
5 out of 5 stars

November 7, 2020


I've put it through the wringer

Sentry is the perfect name for this tail light. Best rear light I've used. Great feeling to be riding on my early morning rides knowing this light has my back.

Blair H
5 out of 5 stars

October 4, 2020

Great light.

I've put it through the wringer

Terrific rear light. Especially for long and early morning rides.


Originally reviewed on Backcountry.com