Review: Exposure Lights Diablo Mk.6

The ultimate flashlight continues to improve now with 1140 measured Lumens

Lights Lights Shootout

2015 Lights Shootout

Exposure Lights Diablo Mk.6 Front Quarte Profile

The Exposure Diablo is now in its sixth edition as it claims 1300 Lumens with a run time of one hour. We’ve grown up with this light since the first revision and it is still the light with the most polished construction and most functional helmet mount.

The Diablo Mk.6 still packs a punch in the category with a brightness measured at 1140 Lumens with a weight of 132 grams.

The helmet mount is still good, but with the flared out rear of the Diablo, the light needs to be mounted well on the rear of the helmet so the light can be aimed properly.

Video: Test loop with the Exposure Lights Diablo Mk.6. Camera is on a locked ISO setting and is set to Wide Angle mode

Beam Pattern Photo

We photographed the lights in the same location setting with the same camera settings. The photos were taken in the back yard that is approximately 25 yards long. These photos feature many objects and a distinct background to analyze detail and beam pattern. Compare all Beam Patterns here »

Exposure Lights Diablo Mk.6 Backyard Beam Pattern

Integrating Sphere Measured Lumens

This light measured 1140 Lumens in an integrating sphere. Claimed Lumens by the manufacturer is 1300 Lumens. Compare all Lumen Tests here »

  • Still one of the brightest and lightest
  • It serves as the perfect flashlight around the house or campground
  • Extremely small and bright with 132 gram weight
  • Very innovative helmet and handlebar mounts are both included
  • Machining and quality are first rate
  • Carrying case is just right
  • Flexibility with piggyback battery option and many other options accepted by the Smart Port
  • Excellent programmability and light levels now available
  • Switch quality is excellent
  • 1140 measured Lumens falls short of 1300 Lumen claims
  • 1:00 hour run time at full power is limited
  • $300 for this light is being threatened by a crop of new self-contained lights and there’s better options for a bar light
  • Price: $300
  • Claimed Lumens: 1300 Lumens
  • Measured Lumens: 1140 Lumens
  • Lumens per $: 3.80 Lumens
  • Lumens per gram: 8.64 Lumens
  • Time on High: 1:00 Hours
  • Charge Time: n/a Hours
  • Mounted Weight: 132 grams
  • Category: Flashlight/High End
Overall Rating

4.5 Flamin' Chili Peppers 4.5 out of 5 Flamin’ Chili Peppers

For more information visit

This article is part of Mtbr and RoadBikeReview’s 2015 Lights Shootout. To see all the bike lights tested CLICK HERE.

Photo Thumbnails (click to enlarge)

About the author: Francis Cebedo

The founder of mtbr and roadbikereview, Francis Cebedo believes that every cyclist has a lot to teach and a lot to learn. "Our websites are communal hubs for sharing cycling experiences, trading adventure stories, and passing along product information and opinions." Francis' favorite bike is the last bike he rode, whether it's a dirt jumper, singlespeed, trail bike, lugged commuter or ultralight carbon road steed. Indeed, Francis loves cycling in all its forms and is happiest when infecting others with that same passion. Francis also believes that IPA will save America.

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  • James Penfold says:

    Another feature that Francis didn’t review that riders might find useful:

    TAP (Tap Activated Power) – Most riders reading this are going to helmet mount a Diablo – this allows you to use the TAP feature: Essentially the whole body of the light is a switch, so changing modes is incredibly quick and effective. This avoids having to fumble for a button, especially helpful if you are wearing full fingered gloves or Winter thickness gloves where you lose the tactile touch. The end result is that easy brightness changes allow the rider to better manage battery consumption so you can get more out of a small, light package.

    Regarding the comment about the light needing to be mounted toward the rear of the helmet – I totally respect Francis’ observation, but should point out that this is the first time in 6 years that we have heard of this being an issue.

    If you have bought the light from a US retailer and have this issue with a new light, I encourage you to contact us.

    Thanks for reading.
    Happy trails
    IBEX Sports (US Importer)

  • david says:

    TAP is kinda cool, took me a bit to get how to activate , but watch the first minute of this to see how it works..

  • MR says:

    Please, please, please provide ride times for settings for other than the maximum brightness setting.
    Example: Exposure Mk 6 – having a light that only lasts one hour is a joke. Very few people are going to run that light at the max setting.How about at least also providing a low and medium setting for all the lights. Please, please, please!

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