Exposure Diablo Mk4
- Item: EXP0025 Claimed Weight:"Claimed Weight" is an unconfirmed weight provided by the manufacturer. 108 g
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 it’s 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. After all, the requirements needed for a high-paced trail ride are quite different than 24hr race, or a week of commuting -- and OMS lets you tune the light for any of those conditions.
For example; in the first OMS setting, the Diablo Mk4 will push 1100 Lumens for 1hr in high, medium gets you 3hrs at 540 Lumens, and low nets 280 Lumens at 6 hours -- great for standard trail riding or commuting. Now, let's say you're going on a moonlit epic, something along the lines of six hours pedaling in the dark. You're not going to need full power to light the road or trail because you're not alerting cars or traveling at race-pace.
For that situation you can select the third OMS mode where the Race Mk4 will kick out a sufficient 540 Lumens for 3hrs in high, 210 Lumens for 10hrs in medium, and 100 Lumens for 24hrs. That'd be plenty of light to safely cut through the darkness and make it back to camp.
The OMS modes are selected using the power button located on the back of the unit. The new info display resides under a clear silicone covering with 3 color mode LED's that double as the OMS display indicator and a fuel gauge. The Diablo Mk4 mounts to your helmet via a small, but sturdy threaded mount.
All that is required is a vent hole in the helmet, as the mount has built-in washers on the top and bottom. You simply screw it together, clamping the vent hole between the two pieces. The top of the mount has a C-shaped clip that snaps securely around the body of the Diablo Mk4. It contains a ball joint that gives you a degree of positional freedom to aim the light. The same ball joint works with an included handlebar mount if you'd prefer that setup.
The Exposure Diablo Mk4 has a two year warranty against defects in materials and workmanship.