Rockbros Bicycle Rear Taillight Saddle Rail Mounted Review

Last Updated on July 25, 2022 by FAB Jim The Cyclist

Because my Surly doesn’t have a lot of seat post showing I decided a saddle rail mounted taillight might be the best way to go.  I shopped around quite a bit and landed on this one from Rockbros, take a look:

Rockbros Taillight

This one is just a regular taillight, so you turn it on, and it goes.  Many on the market are called smart and are supposed to sense when you are moving and turn off and on based on that.  I found too many reviews of the smart ones that said they don’t always turn on.  I didn’t want to risk safety with possibly not turning on.   


5 modes: 1st mode is red flashing, 2nd mode flashes between red and blue, 3rd mode slowly changes between red, green, blue, yellow, purple, light blue, white, 4th mode is just two red led’s flashing, and 5th mode is all LED’s constant red.

Waterproof: IPX5 waterproof, good for rain. 

USB rechargeable: never have to buy batteries.

Easy to install: attach mount to rails with two zip ties.  Light removes from mount with a twist, like a computer mount.  Also comes with easy post mount.


Model: Q1

Weight: 24 grams for just the light without mount.

Run time: 8-50 hours depending on mode used.

Size: about 1.25” diameter x 1” long

What’s Included

Saddle rail and post mount, 4 zip ties, 2 rubber bands, charging cord, and light.


So far, I’m very happy with this light.  Mounts nicely on my saddle rails, is lightweight, and should be pretty aero under the saddle.  To start it you just hold the button for a few seconds, then a quick push changes the mode.  I have a few hours on it so far and the battery is holding out.  Charging is easy with the provided cord.  Brightness also seems fine. 

I’m going to rate this 5 out of 5 stars.  Good deal for only around $17. Will update review in a few weeks. Get yours on Amazon:

Rockbros Rear Bike Light – AMAZON

I bought my son a refrigerator on his birthday. His face lit up when he opened the door.

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