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Exposure Lights Sirius 11

1300 lumens. 90 grams.

$132.00

At just 90 grams the Sirius Mk11 is one of the lightest 1300-lumen lights you can bolt to a bar — and one of the toughest. A tight 8° collimated beam throws light far down the road, while Day Bright pulse and 270° side visibility keep you seen long before you arrive.

Max output
1300 lumens
Runtime
1–130 hours
LED
Cree XHP35.2
Beam
8° collimated spot

In stock

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More about the Sirius Mk11

Exposure squeezed a remarkable amount of light into the Sirius Mk11: a single Cree XHP35.2 LED behind an 8° collimated lens delivers 1300 lumens of long-range throw from a CNC-machined 6063 aluminium body weighing just 90 grams. Nine programs let you balance output against a runtime that stretches to 130 hours, and USB-C fast charging refills it in a little over two hours from any power bank. Add the Commute Lens Cap for 270° side visibility, lean on Day Bright pulse for daytime conspicuity over a kilometre away, and trust the IP67 / IK09 sealing when the weather turns. Designed and built in the UK, and serviceable for life.

Road, commute or trail?
The Sirius Mk11's tight 8° beam is built for speed on the road and the commute, throwing light well ahead at pace. Pair it with the Commute Lens Cap for extra side presence in town. For technical off-road riding you'll want a wider beam like the Diablo on the helmet.

Specifications

Max output
1300 lumens
Runtime
1–130 hours
LED
Cree XHP35.2
Beam
8° collimated spot
Weight
90 g
Charging
USB-C fast charge, approx. 2 hours
Water rating
IP67
Impact rating
IK09
Body
CNC-machined 6063 aluminium, gunmetal grey hard anodised
Side visibility
270° with Commute Lens Cap
Programs
9 programs
Technology
Day Bright pulse, Intelligent Thermal Management
Built
Designed & built in the UK
Warranty
3-year + lifetime LED guarantee

The Finer Details

FEATHERWEIGHT THROW

Featherweight Throw

A Cree XHP35.2 behind an 8° collimated lens turns 90 grams into 1300 lumens of focused, long-range light — Exposure claim it's 50% lighter than its closest rival.

SEEN FROM EVERY ANGLE

Seen From Every Angle

Day Bright pulse is visible over a kilometre away in daylight, and the optional Commute Lens Cap opens side visibility to 270° for safer junctions and roundabouts.

TUNE YOUR RIDE

Tune Your Ride

Nine programs and the Optimised Mode Selector let you trade brightness for runtime — from a punchy commute to a 130-hour slow burn — with battery status shown in simple traffic-light colours.

About the brand

Exposure Lights

Exposure builds bike lights the hard way — in-house, in England, from CNC-milled aerospace-grade aluminium that's then hard-anodised for a body that shrugs off weather, grit, and the occasional unscheduled meeting with the tarmac.

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