MK2
Very Bright focused beam
Helmet mount is awesome, easy to snap in and adjust
Piggy Back available to extend battery life
Very high quality build.

Short run time on Bright
Medium setting is Much lower
If you ride in the Heat (Arizona) in the summer this light will overheat and kick down to medium and back, the constant change is annoying. Temps were always above 90F sometimes over 100F. When I called they suggested to run on medium, said it was designed in colder climates.
Charger is super cheap and had to replace to (which they did quickly)

With the short runt time, You need to either run on medium, or with a piggy back that you can get a an attachment that just snaps on so is self contained on your helmet.

Works best as a headlight with a wider pattern handlebar mount.

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none

Small, easy handling

None

Best light so far (been riding for almost 15 years, around 10 000 km/year).

Weight, adaptability, build quality, battery life, appearence, lots of light!

Price

This was my best 2010 bike related purchase by far (apart from my Niner EMD)..
Really love the build quality (CNC'ed body), and the reliable and adaptable ball joint helmet mount. Spreads a lot of light where you need it, easy to operate.
The initial is very complete: comes in a well designed box with charger, safety cord, very practical ball joint helmet mount with different lenghth screws (for different helmets).
You can extend battery life with one of the 'piggy bag' external batteries (not included).
Recommended for commuting and serious mountainbiking alike.
Can be used as a handheld torch as well.

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Only handlebar lights

It's light enough to not be noticeable, longest ride was 1.5hrs with it mounted.
Simple mount and all-in-one design
Medium setting is bright enough to use on single track, it was actually preferable compared to high on dense single track when leaves were still on the plants.
Water resistant enough to ride in continuous Oregon rain.

The switch... it's contact is not good at all, especially if you're riding in the cold or wet. I need to press really hard on it which is annoying with a glove and when it's on your head.
Flashing mode is ridiculously bright then dim so you will distract yourself and probably get a lot of negative attention - I've never used the flashing mode in public.
The mount is wearing to the point where the light will shift to a different angle when under enough acceleration from hitting a bump.
No indication as to what capacity the battery is at when using computer to charge.
Product service is awful at Exposure, they didn't get back to me when I asked them a simple question - granted it was e-mail but they should have responded.
Life at full charge is not long enough.
Only comes with UK plug for charging.
Lanyard isn't really a lanyard, more of a loop - as you can see in the review vid from 2011 the lanyard still doesn't fit over your head...

Save up for it, especially if you commute and ride single track because it's really convenient to throw in your pocket. I was most worried about riding with it in the rain but it's held up fine, the switch just doesn't cooperate all the time. I bought a simple outlet adapter because the AC/DC converter works from 115VAC to 240VAC so you don't need to step up the voltage or anything, just re-route the plugs with a $3 adapter. Comes with a case but it's non-flexible, huge and generally pointless; it's unfortunate they include it because it's not even sized right to fit the mount properly!

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None, rode with people who had magic shines and didn't really notice a difference however they were saying they wish whey had something on their helmet. I definitely would have liked a light on my handlebars at times though.

Small, light, build quality, great output, simplicity, no wires

Battery is not user replaceable!! No clear consistent statement from Exposure how much it will cost to replace the battery.

Great light. But problem is the light should last 5+ years, but the battery will loose 50% of its capacity after 3 yrs of normal use (especially if deep cycled). After a few years, 30 minutes of runtime at high beam won't get you very far . .

Exposure needs to come out and clearly tell buyers what the battery replacement cost/policy is.

Superb engineering, design and light output

Relatively short burn time on high setting

I have a bar mount for the Enduro MAXX, but needed a helmet light to better see where I want to go versus where the handlebars are pointing at the moment.

Given its small size, I was shocked that the Diablo Mark 3 (2012 model) light output on high is 975 vs. 720 lumens for my Enduro MAXX which is 3 years old. Both use 3 LED emitters. These guys keep innovating.

Get a piggyback battery if you want to use high power setting for extended periods, but using medium will give you 3+ hours and still be plenty bright for technical singletrack.

Why put up with wires, battery packs and inferior performance when you can get a light that could have been designed by Steve Jobs. Exposure Lights are that good.

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Exposure Lights Enduro MAXX

Incredible light output

None

This light is unbelievable it is incredibly durable, well made and its more than powerful enough to use on your bar.. I do!!! If 1 hr on high is a problem get a piggy back.. This thing lights up like a stadium!!!!!

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Niterider, light n motion

Lightweight, beam pattern is excellent, helmet mount is the best I've ever used

Handlebar mount is awful. Also, only 1 hour runtime on high.

This is THE best light of 2010, no doubt. All things combined it is a great deal: excellent helmet light for the singletrack, great bar light for the road, also pop in the Redeye Micro to get a wonderful all-in-one commuting light.

The beam pattern is just right: not too tight, but not floody either.

Also, because it is such a little gem you can put it in your pocket/backpack without even noticing it's there: take it with you to walk the dog, caving, canoeing... also comes handy in case of a power outage ;-)

Be sure to get the "2011" version which has three XPGs, not the older "2010" with the P7 emitter and the boom reflector. The 2011 version is called "Exposure Diablo Mk2".

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Lupine lights, Dinotte lights, and older halogen systems

Light. Bright. No wires. Excellent build quality.

None

This is an excellent light and worth every penny. It has dramatically increased my sense of security while commuting at night, even on the lowest setting. On the trails the Diablo throws a very useful pattern and is far brighter than I am fast.

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All sorts of lesser creatures

Compact, Lightweight, powerful wide beam

Short battery life on highest output

Two Thumbs up! Very versatile light with many uses. Helmet light, commuter bar light. I also bought the rear red spot that snaps on easily to the light. It is super bright great for car traffic, but a little blinding for the person behind you on a niteride.


Charges super fast and the build quality is impressive.

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Niterider, Light & Motion