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Flux™ 850 Headlight

Splitting the difference between the previous Flux 800 and 900, the Flux 850 gets the game-changing Mode Shift found on the Flux 1250. This means there are three steady modes, all using both the wide and spot beams. Go from Steady Low to Steady High in a single push, without cycling through a flash mode. Press-and-hold for two seconds and you get into the secondary modes: Steady Flash to be seen in busy urban environments, Flash Mode for endless runtime, and two Flashlight modes with 10 and 20 hours of runtime for hanging around the campsite, or when you forget to charge your light and need to conserve the last few percent of battery life to get home.

IPX7 waterproof means this light can survive being submerged 1 meter deep for 30 minutes. No, it's not meant for scuba diving. But is can handle anything you can throw at it on two wheels.

Rider Reviews

  • 4
  • 27 Reviews

Works well

Lots of different modes. Beam good for road illumination, not so great for gravel. Easy clip to remove and charge.

Would Recommend?
Yes!

Verified Buyer

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Name:
Rog S.

Helpful?

Battery life is kind of

Battery life is kind of disappointing but other than that it is super bright and great for short dark rides.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

Helpful?

Good ligth, bad quality

It was a good ligth while it lasted, unfortunately the outdated Micro USB charger port broke off. Literally came out attached to my charging cable. Never dropped it or mistreated, thankfully I bought on sale so it doesn't hurt as bad.


Name:
Morris

Helpful?

Love it But......

Bought this light over a year ago. Due to injury and life stuff, I wasn't able to do any night rides until this winter. After 4 rides there was a rattling sound and the light stopped running. finally, with nothing to lose since it was over a year old and out of warranty, i took it apart. the negative wire was detached. tried to repair but ultimately soldering, gluing, taping and anything else wouldn't keep it connected. When it worked, it literally lit up the trail! *****HOWEVER - With that said, I have a buddy that has one he has put through the ringer and it still works fine. I use many specialized products from bicycles, apparel, shoes, helmets, and multiple accessories with great results! I still recommend this product!*****


Name:
DennyG

Helpful?

Will not fit fat bars.

Will not fit fat bars.

Would Recommend?
Yes!

Verified Buyer

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Name:
Matt C.

Helpful?

Great light

Light is great. Handlebar mount is one of the best I know. Only the mount’s for helmet or camera style are not included which would have made it a 5 star for me.

Would Recommend?
Yes!

Verified Buyer

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Name:
Michael B.

Helpful?

Cheap charging connection

The charging connection solder came off after a few months. Also not practical on/off switch. I am sorry I purchased it and without proof of purchase, no warranty is honored.

Would Recommend?
Yes!

Name:
Al

Helpful?

Bright but terrible battery life - avoid

I am not sure if there is an issue with my battery. I have had this for a few weeks and have noticed that when in the daytime flash mode it is meant to last 20 hours. I only get 4 hours! Not sure if this is false advertising or I have received a faulty product. Would appreciate contact from Specialized if the latter


Verified Buyer

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Name:
Specialized R.

Helpful?

Love the lamp!

I am in the automotive repair field. So the install was very easy on my rock Hopper expert. Very surprised by the light output and the run time is perfect for me! Going on two years now! Yes an upgrade to the c charging port is needed!

Would Recommend?
Yes!

Name:
Tim

Helpful?

bright yes, but doesnt fit my 2023 specialized stump jumper.

was pretty excited until i realized the mount does not fit my new specialized stumpjumper. the bar is too fat, and where its tapered, the light just comes loose right away.

Would Recommend?
Yes!

Name:
ron m.

Helpful?