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Big Cobber

Big Cobber Rear

AUD $134.99

This product in currently out of stock


Big Cobber rear produces an incredible 330° of light, so you’ll be clearly seen from all angles.

It’s brilliantly effective at attracting attention day and night, so if you’re after the safest commuter bike light around then look no further.

48 in stock


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Simple Button

Simple Button Knog Knog

Big Cobber is super simple to operate. A long press of the single button will turn the light on and off, and a short press will cycle through the modes. The Big Cobber has a run time of up 120 hours.

Super Bright

Super Bright Knog Knog

Packing 270 lumens, Big Cobber is seriously bright. Efficient Chip on Board (COB) LEDs provide maximum brightness level for up to 90% of the battery burn time. Big Cobber comes pre-programmed with 8 modes, plus it’s compatible with the ModeMaker app so you can customise your light modes.

Mount with Ease

Mount with Ease Knog Knog

Cobber comes with a tool-less removable silicone straps for bars and seat posts 22 – 32mm+ diameter and a magnetic mount. A large strap is also provided that will fit tubes and head tube profiles with a circumference of up to 200mm. Cobber comes with a standard and Aero mount.

Integrated USB Plug

Integrated USB Plug Knog Knog

No charging cable is required for your Cobber, its integrated USB plugs directly into USB ports. It has a charge time of 5.5 hours. When your Cobber is running low on battery, a red ring will light up around the button. This ring will turn green and then turn off once the Cobber is fully charged and ready to go.

18 factories told us this light would be impossible

18 factories told us this light would be impossible

We were happy to prove them wrong.

  • Specifications
  • Instructions


H: 22mm x W: 33mm x L:93mm


62 grams

Charge Time

5.5 hours



  • Modes Lumens Runtime
  • Max 160 2
  • Mid 60 3.5
  • Steady Pulse 270 2.5
  • Flash 270 6.5
  • Rolling Flash 110 5.5
  • Side Flash 170 2
  • Disco Flash 140 5
  • Eco Flash 15 100


Watch the instructional video or download the user guide below.

Cobber Quick Start Guide

Customer Reviews

Based on 36 reviews
Lorenzo Brown
The most IMPORTANT light in cycling

While most lights provide visibility from a “head on” signal direction, the Knog Cobber light is visible from the left, right and rear… 330 degrees! The Big Cobber rear light provides a whopping 270 lumens of brightness, rendering undeniable visibility during both the night and day time hours. Furthermore, the long lasting charge keeps the light flashing for 5-6 hours at a time, which is great for my long epic rides!

Tim Atkinson
Blown Away

I do most my riding during the day.
The BIG COBBER REAR BIKE LIGHT gives me the confidence that I won't blemd into tge back ground and that I will be clearly seen.
True peace of mind.

Florian Mutin
Excellent product

I use the Big Cobber Rear Bike Light to commute on the road in the countryside and I feel really safe with it. I had the following small problem on a rainy day: small stones came to block the button and made the product unusable. With the vacuum cleaner I was able to unblock the button.

Stefan Beram
5 stars

great light, love all the different modes and makes me feel safe riding at night!

Peter Sterionow
Grest illumination