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  • Exposure Sirius Front Light
  • Exposure Sirius Front Light
  • RRP$164.49
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  • IN STOCK(5+)

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Exposure Mk1 Sirius Front Light

New to the 2013 range is the Sirius.

The Sirius is aimed at the commuter and offers proven Exposure technology including Cable Free Design, Intelligent Thermal Management and Fuel Gauge Indicator at an affordable price point.

With an output of 360 lumens the Sirius gives more than enough light to navigate the darkest city streets, whilst the pulsing mode gives maximum visibility during daylight hours.

Supplied with the all new Sirius handlebar mount, it’s designed to be quick and easy to attach and remove so it can be taken with you when you aren’t with your bike.

Front Light Features:

  • Weight: 84g
  • Output: 360 lumens
  • Power: 2600mAh Lithium Ion battery
  • Burn time: 2h High, 4Medium, 6h Low
  • Emitter: 1 Cree XPG R5 LED. 
  • Cable Free Design (CFD): A primary feature unique to Exposure Lights removes the hassle of cables and straps while utilising the range of brackets available.
  • Function button: 3 colour Mode and Fuel Gauge indicator.
    Intelligent Thermal Management (ITM): Patented technology that combats the loss in efficiency of LEDs at elevated temperatures, maintaining optimum output keeping you shining ‘Brighter for Longer’.
  • Smart Port Technology (SPT ): Patented technology that enables a wide range of accessories to be used; Additional rear lights, back-up power supplies, remote switches and even charging other USB devices direct from your light.
  • Collimated Lens Technology: Exposure Lights use these high-tech resin lenses which have been extensively researched. These lenses are specifically designed to maximise light collection from the LEDs and efficiently produce an optimum beam pattern for cycling ensuring no light is wasted. 
  • Weatherproof Body: CNC machined aerospace grade aluminium body with efficient heat transfer design. Fully manufactured in the UK.
    Gold plated charge port: The charge port is gold plated for corrosion resistance, more efficient conductivity and it is sealed to a greater level adding protection to you light.
  • Storm Cap: The Smart Port in protected by a silicone cover to stop muddy gloves pushing dirt into the port.

German Customers Please Note:
Wichtiger Hinweis: Dieses Produkt darf in Deutschland nicht an Fahrzeugen im Sinne der Straßenverkehrszulassungsordnung verwendet werden.
Important notice: In Germany, this product may not be used on vehicles in the meaning of the Road Traffic Admission Ordinance.

Buy Exposure Front Lights from Chain Reaction Cycles, the worlds largest online bicycle store.

  • Colour: Black
Rated 3.8 out of 5 by 4 reviewers.
Rated 4 out of 5 by good solid commuting light my light didn`t start too positively with the light unable to charge via usb(which i will send back once were in summer)but borrowed(and then bought) a main charger to try and the light has been everything i expected,better when black outside and no street lights,battery life on full power is my other con but 2 hours is about all i need on early long rides. build quality is what i would expect for over $100,love the illuminating power button,great idea with 3 different colours for battery life. 11 August 2014
Rated 1 out of 5 by Might be a great light, but be careful! I bought one of these, charged it over night and was very impressed the first time I switched it on as it is a great light. However, that excitement wore of quickly when it switched to powersave mode after only 10mins. I brought it home and charged it overnight again only to have the same results the next day. I sent it back to the manufacturer only to have it returned two weeks later with them saying that there is nothing wrong with the light. So, be careful buying this light because if it is faulty you might not have it repaired. Also, burn time claims of 2,4 and 6 hours is vastly exaggerated. Oh, and it is not cheap either! 05 November 2013
Rated 5 out of 5 by Great commuting front light Just finished 4hrs of commuting with this light as my main riding light, with a Flash /Flare set as back up. I have tried all three modes and even on dim its plenty bright enough to light up the road ahead for fast commuting. I bought the extra fixed quick release handlebar bracket rather than use the one supplied, and have not suffered from the slippage mentioned in the other review, build quality is second to none and the advantage of having the power port to supply other attachments at this price can not be sniffed at. 15 December 2012
Rated 5 out of 5 by Superb light I'm an all weather commuter using lit/unlit roads with a minimum 7 to 15 mile trip in the dark This light was purchased to replace a Cateye EL 520. Build quality of the light seems excellent, the only slight weakness as with most lights is the handlebar bracket fixing. The bracket is very simple to fix to the handle bars and holds the light in place securely. However the light itself does move horizontally backwards and forwards in the bracket, this would be really annoying if mounted on a helmet. The simple solution I am using is two Mk1 elastic bands on the lights barrel but at £100 plus surely this should not be necessary! Maybe two shoulders should be machined on the lights barrel? The Sirius has 3 power modes plus strobe flash, the low power mode is equal in brightness to that of the Cateye on full power. This light is bright enough to travel on unlit roads at 20 mph and I has plenty of burn time to easily cover my journey on full power but I find the low level is more than adequate for my purpose of dodging Isle of Wight potholes, which by any standard have to be world beaters! So to summarise Its light, bright, easy to charge and use and it's British, so after a week of use I can highly recommend this product. 26 October 2012
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The photo shows the Mk1 (without the sideways lenses), but notably you don't have the Mk2 as a separate stock item (and you should!)
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7 months ago
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I've had this light into the office to double check and can confirm it is the new Mk2 version (with the open side lens cover).
Age: 25 to 34
Gender: Male
Attitude: Just for Fun
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