To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
The Exposure Sirius with TraceR ReAKT Bike Light Pack is the superior package with high power in a compact front light that is as at home on either dark, rural unlit lanes or lighting the urban commute.
The Exposure Sirius with TraceR ReAKT Bike Light Pack is the superior package with high power in a compact front light that is as at home on either dark, rural unlit lanes or lighting the urban commute.
Exposure Lights

Exposure Sirius Mk9 Bike and TraceR Mk2 Light Set in Gun Metal Black

£140.00 £155.00 10% off
Earn
in Customer Rewards when you buy this item today
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Hassle free returns

In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

It is recommended that you use a recorded delivery service or return to a store to ensure your items are received by us. We cannot assume responsibility for items that are lost in transit back to us.




Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Exposure Sirius Mk9 Bike and TraceR Mk2 Light Set in Gun Metal Black

Season:All Year Round

Brand:Exposure Lights

Code:EXPSIRIUS9TRACERRAGMB

The Exposure Sirius with TraceR ReAKT Bike Light Pack is the superior package with high power in a compact front light that is as at home on either dark, rural unlit lanes or lighting the urban commute.

Combined with an intelligent and extremely lightweight rear light featuring Reactive Ambient Kinetic Technology (ReAKT) enables the light to automatically brighten under braking and when entering brighter light areas to ensure a constant contrast in lumen output is maintained.

Sirius Mk 9 Features:

  • Output 850 lumens (measured)
  • Weight: 84 grams
  • Burntime: Min 2 hrs Max 36 hrs
  • Battery Capacity: 2900 mAh Li-ion
  • Charge Time 7 Hours
  • Dimensions (mm): Length - 110, Head - 28, Back - 28
  • LED 1x XPL2
  • IP Rating IPX5
  • DayBright
  • Optimum Mode Selector
  • Cable Free Design
  • Intelligent Thermal Management
  • Fuel Gauge
  • USB charging
  • 2 Year Warranty
  • Made in the UK
  • In The Box: Sirius Mk9 GMB, QR Handlebar Bracket, USB Charge Cable, QS Guide
  • DayBright: A legal requirement for all new motor vehicles since 2011, drivers expect to see daytime running lights from everything moving on the road. Keep yourself safe with Exposure's DayBright pulse pattern. A bespoke pulse pattern designed for daytime use, keeping you seen and therefore safe. Whilst a constant flashing can be forgotten or ignored subconsciously, the irregular pulse is designed to stay at the forefront of attention making sure you are always visible, from over a kilometre away, even in the brightest conditions. DayBright mode will get you noticed and keep you in focus.
  • Optimum Mode Selector: Various programs in the lights can easily be selected to offer a choice of run times and modes so you can find the right one for your ride, be it an all-night adventure or an intense blast.
  • Cable Free Design (CFD): The Battery is housed within the body of the light so there are no cables or separate battery units, giving a neat solution with fewer opportunities for water ingress, mounting difficulties and crash damage. Combined with the renowned quick-release handlebar bracket lights are easy and quick to mount with rock solid attachment.
  • Intelligent Thermal Management: Patented circuitry within the light will reduce power to the LEDs, if they go beyond the optimum temperature, keeping the light as efficiently as possible to maximise output and battery capacity. Once cooled the output is automatically restored.
  • Fuel Gauge: Using a traffic light system remaining runtime is easily monitored at a glance so you’re not caught out. The colour feedback is also used for mode selection, before defaulting back to the runtime.

TraceR Mk2 ReAKT Features:

  • Output 120 ReAKT Flare, 75 lumens red
  • Weight: 35 grams
  • Burntime: Min 3 hrs Max 24 hrs pulsing
  • Battery Capacity: 700 mAh Li-ion
  • Charge Time 3 Hours
  • Dimensions (mm): Length - 57, Head - 28, Back - 19
  • LED 1x XPE-R
  • IP Rating IPX5
  • ReAKT
  • DayBright
  • Optimum Mode Selector
  • Cable Free Design
  • Intelligent Thermal Management
  • Fuel Gauge
  • Micro USB charging
  • 2 Year Warranty
  • Made in the UK
  • In The Box: TraceR Mk2 ReAKT & Peloton, QR Seatpost bracket, Micro USB charger cable, QS Guide
  • ReAKT: Reactive Ambient Kinetic Technology (ReAKT) was developed for the ever-changing conditions you encounter when cycling. Whether it’s dappled sunlight through the trees, in and out of streetlights, or a sudden apocalyptic downpour, light sensors pick up those changes in ambient lighting and change the brightness of your light to suit. This ensures maximum visibility whilst conserving power when full brightness isn’t required. The Kinetic element of the name is to signify the flaring up following a sudden change in pace, acting as a brake light when slowing, or just a beacon of light following a quick dodge of a pothole, alerting other road users that you’ve changed course.
  • DayBright: A legal requirement for all new motor vehicles since 2011, drivers expect to see daytime running lights from everything moving on the road. Keep yourself safe with Exposure's DayBright pulse pattern. A bespoke pulse pattern designed for daytime use, keeping you seen and therefore safe. Whilst a constant flashing can be forgotten or ignored subconsciously, the irregular pulse is designed to stay at the forefront of attention making sure you are always visible, from over a kilometre away, even in the brightest conditions. DayBright mode will get you noticed and keep you in focus.
  • Optimum Mode Selector: Various programs in the lights can easily be selected to offer a choice of run times and modes so you can find the right one for your ride, be it an all-night adventure or an intense blast.
  • Cable Free Design (CFD): The Battery is housed within the body of the light so there are no cables or separate battery units giving a neat solution with fewer opportunities for water ingress, mounting difficulties and crash damage. Combined with the renowned quick-release handlebar bracket lights are easy and quick to mount with rock solid attachment.
  • Intelligent Thermal Management: Patented circuitry within the light will reduce power to the LEDs, if they go beyond the optimum temperature, keeping the light as efficiently as possible to maximise output and battery capacity. Once cooled the output is automatically restored.
  • Fuel Gauge: Using a traffic light system remaining runtime is easily monitored at a glance so you’re not caught out. The colour feedback is also used for mode selection, before defaulting back to the runtime.
Sizing Information
Professional Opinion
Question(s) answered about Exposure Sirius Mk9 Bike and TraceR Mk2 Light Set in Gun Metal Black
Ask a question
Question(s) asked regarding Exposure Sirius Mk9 Bike and TraceR Mk2 Light Set in Gun Metal Black

Ask a question

Your name
Your email address
Your phone number
Your question
Submit Question  Close
  • Is it possible to replace the battery when it runs low or will no longer hold a charge?
    Question asked by Andrew on 15/05/2022 16:24:00
    The batterries are not replaceable on these lights. They are fantastic lights and the Exposure Warranty will cover you accordingly https://www.exposure-use.com/Brands/Exposure-Lights/Product-Support/Warranty
  • Home Cycling Accessories Exposure Lights Lights