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  • Exposure Lights Diablo Mk4 Bike Light, Black
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Exposure Diablo Mk4


Price: $299.95 & FREE Shipping. Details
Only 5 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
Black
One Size
  • Weight: 108g Output: 1100 lumens Power: 3100mAh Lithium Ion battery Burn time: 1 - 24hrs (depending on OMS selection) Emitter: 3 Cree XPG R5 LEDs
  • Cable Free Design (CFD) A feature unique to Exposure Lights removes the hassle of cables
  • Weatherproof Body: CNC machined aerospace grade aluminum body with efficient heat transfer design; Fully manufactured in the UK

There is a newer model of this item:


The Bike Commuter Store
If you live life in the bike lane, visit the Bike Commuter Store. From panniers to lights, clothing to components, browse bikes and all of the key gear you need for a comfortable and safe commute.

Frequently Bought Together

Exposure Lights Diablo Mk4 Bike Light, Black + Exposure Lights Quick Release Handlebar Bracket with Clip for Diablo, Joystick and Sirius
Price for both: $333.95

Buy the selected items together


Product Description

The Exposure Diablo Mk4, with a Competitive Cyclist exclusive handlebar and helmet mount, offers 1100 lumens of light, yet it does this while only tipping the scale a hair over 100g -- and itAAAs self-contained. If you've ever snagged a power cord and had your singletrack tunnel go dark or would never consider spoiling a beautiful frame by running cables all over it, then you know the appeal of cable-free lights. The Diablo Mk4's 3100mAh Lithium-ion battery is enclosed within aerospace grade, exquisitely CNC'd aluminum body. That extensive machining, however, isn't just to look cool. It's actually designed to help heat transfer -- to physically cool the light. Packing three Cree XPG R5 LED's, the Diablo Mk4 can generate excessive heat. One way it's managed is through the weather-tight body, the other way it's managed is with Exposure's patented Intelligent Thermal Management (ITM). If the internal temperature gets too high, ITM kicks in and automatically drops the power level down to the next lowest setting. It will remain at the lower setting until the temperature inside the housing returns within normal operating range. This, and the weatherproof housing, ensures the light's battery and LED bulbs are safe from moisture, muck, and heat for a long life span. A defining feature found here on the Diablo Mk4 is Exposure's Smart Port Technology Plus. Essentially, it's a cylindrical plug on the back of the lamp unit that allows you to insert the smart charger. But, it also enables you to plug in accessories like a red LED taillight and back-up batteries, or to even charge other USB-powered devices. It will automatically recognize each accessory and configure the system to take a charge or power accessory lights. Best of all, a remote switch is available for quick light control. A new feature found on the Diablo Mk4 is Exposure's Optimum Mode Selector. OMS offers eight pre-programmed settings to provide the optimal lighting for ride conditions.

Product Details

  • Shipping Weight: 6.4 ounces (View shipping rates and policies)
  • ASIN: B009W67UYW
  • Average Customer Review: 4.8 out of 5 stars  See all reviews (4 customer reviews)
  • Amazon Best Sellers Rank: #500,094 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
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Customer Reviews

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Most Helpful Customer Reviews

7 of 7 people found the following review helpful By Traderjohn on April 12, 2013
I've tried several other high intensity lights with the battery pack attached separately to the handlebar stem. Yes they have longer battery lives, are cheaper and a bit brighter. But they don't have the build quality of the Diablo, portability or flexibility. I have three bikes and frequently switch this light from different handlebars or helmets with the two mounts. I even carry it on my road bike for training rides just in case it gets bark or I'm riding near sunset (especially this last winter). There's no way I'd carry a big battery pack on my road bike.

On quality, I've used the Mk4 for several months and it's been great. I can't say that for the Chinese knock-offs like Magicshare (junk!!). I have an excellent Dinotte (made in USA) that is slightly brighter (but they are both blindly bright) and longer lasting but it only gets used now for long night rides on the handlebar with the Diablo on my helmet. The Diablo lasts about 1.5 hours and has an optional external battery pack that is the size and weight of a roll of lifesavers if you need it.

Yes, it is expensive. But you get what you pay for and I frequently commute home from work in the dark on a route where it is vital I have a bright, reliable light. I wouldn't trust another light now. The fact that I can just throw this in a pocket in my messenger bag and pop it on just just before heading home is icing on the cake.
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3 of 3 people found the following review helpful By MetalMan on September 12, 2013
Color Name: BlackSize Name: One Size Verified Purchase
I love the mounting point and easy user interface. The mounting bracket for my helmet works great and the light weight of the light allows it to sit on my head when mountain biking and stay put without adding to much weight to the helmet and shifting it on your head when bumping down the trail.

I like the beam pattern as well with excellent beam for farther visibility without being too narrow. It illuminates about a 6 foot wide path in front if me without moving my head side to side. But when I look down the trail the beam still reaches out to allow focused visibility of obstacles. Also there are no artifacts in the beam so the light is super smooth and does not have any halo rings like other lights. I also love how it works as a traditional flashlight when performing maintenance or camping or hiking!
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1 of 1 people found the following review helpful By Guido M. Cairo on November 16, 2013
Color Name: BlackSize Name: One Size Verified Purchase
I use this product for everything. Its lights up everything in front of me. Super bright, worth every penny. small enough to put in my pocket. Comes in handy for everything
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By Max on July 24, 2014
Color Name: BlackSize Name: One Size Verified Purchase
You can see practically everything about 20 feet in front of yourself. Mindblowing how bright it is. $300 is a lot of money to put down, but works better than a cheaper light.
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