Big Cobber Rear Bike Light

270 Lumens
$89.95

Big Cobber produces an incredible 330° of light, so you’ll be clearly seen from behind as well as from both sides. It’s brilliantly effective at attracting attention day and night, making it one of the safest rear bike lights you could choose. 

Big Cobber produces an incredible 330° of light, so you’ll be clearly seen from behind as well as from both sides. It’s brilliantly effective at attracting attention day and night, making it one of the safest rear bike lights you could choose. 

FREE DELIVERY 
OVER $50
30 DAY 
 RETURNS
2 YEAR 
WARRANTY

18 factories told us Cobber would be impossible. We were happy to prove them wrong. 

  • Incredibly bright 270 lumens
  • Up to 100 hr runtime
  • Incredible 330° beam angle
  • Quick mount release
  • Waterproof to 3 ft with an IP67 rating
  • USB rechargeable, cable-free charging
  • Pre-programmed with 8 light modes
  • Customize modes with Knog's Modemaker app
MODE LUMENS RUNTIME
Max
160 2 hrs
Mid 60
3.5 hrs
Steady Pulse 270 2.5 hrs
Flash 270 6.5 hrs
Rolling Flash 110 5.5 hrs
Side Flash 170 2 hrs
Disco Flash 140 5 hrs
Eco Flash 15 100 hrs

Free shipping within US mainland on orders over $50 and just $6 on orders under $50. We'll ship it asap, and have it delivered within 2 - 4 business days.

Returns & Exchanges

We stand behind everything we make and want you to be happy. If for any reason you're not satisfied with your purchase, return it within 30-days for a full refund. We'll even pay the shipping. For more information, please see our Returns & Warranty page.  

Shipping on Knog's US website is available to US mainland customers only. If you're shopping from another location, please visit our international store.

Customer Reviews

Based on 10 reviews
90%
(9)
10%
(1)
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(0)
0%
(0)
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(0)
D
Duncan Fraser-Smith
Awesome rear light

I decided it was time to upgrade from my Knog Blinder Mr Chips (a great light) so I was highly visible to drivers whilst riding in inner city. Big Cobber is an awesome product - 270 lumens and curved design really stands out. When driving I see too many cyclists with inadequate rear lights - not me!

T
Tony Peart
Big cobber

Excellent product...........I am a long time bike riding tail light collector and rejector........this is by far the best one I have used

l
lesley mcnab
A great rear light!

This light is bright and charge lasts a long time. Easy to attach to the bike.

L
Luke Martin
Big Cobber ... clobbers all other tail lights!

What an outstanding light! I am scared to put it on "full-blast" mode for fear of upsetting motorists. I feel so safe and the many modes are excellent. Worth every cent! thanks KNOG

B
Brett Leslie
Great bright light

Very impressed with this light. Many modes but most importantly very bright so you can be seen for 1km.

'Big Cobber is hands down the best bike light for attracting attention from the rear.'

‘Knog’s Cobber is an impressive light with a simple and elegant design.’

- bikeradar

Why you'll love riding with Big Cobber.

The world's only 330 degree rear bike light.

Simple Button

Big Cobber Rear is 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. Cobber has a run time of up 100 hours.

Packed With Innovation

Efficient Chip on Board (COB) LEDs provide maximum brightness level for up to 90% of the battery burn time. As well as 8 pre-programmed modes, it’s compatible with Knog's ModeMaker app so you can customize your light modes.

Mount With Ease

Cobber comes with tool-less removable silicone straps for seat posts 22 – 32mm+ diameter and a magnetic mount. Also includes a standard and Aero mount.

Integrated USB Connector

Plug Big Cobber directly into USB-A ports. 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.

Technical Specifications +-

BULB TYPEChip On Board (COB) LEDs
LIGHT OUTPUT RANGEMax: 270, Eco-Flash: 15
LIGHT MODES8
PROGRAMMABLE WITH MODEMAKERYes
AERO SEAT POST COMPATIBLEYes
LOW BATTERY INDICATORYes
FITS SET POSTS22 – 32mm+ diameter
RUN-TIMEHigh: 100 hrs, Low: 2 hrs
CHARGE TIME5.5 hrs
RECHARGEABLEYes (integrated USB-A connector)
WEIGHT62 g / 2.2 oz
DIMENSIONSH: 22 mm x W: 33 mm x L:93 mm
WATERPROOFYes, IP67 rating
OPERATING TEMP-4 to 122 °F
STRAP MATERIALMedical grade silicone
OPTIMUM CHARGING TEMP
68 to 72 °F (Room Temperature)

Product Run Through +-

User Guides +-

Language Download
Cobber Quick Start - English

Customer Reviews

Based on 10 reviews
90%
(9)
10%
(1)
0%
(0)
0%
(0)
0%
(0)
D
Duncan Fraser-Smith
Awesome rear light

I decided it was time to upgrade from my Knog Blinder Mr Chips (a great light) so I was highly visible to drivers whilst riding in inner city. Big Cobber is an awesome product - 270 lumens and curved design really stands out. When driving I see too many cyclists with inadequate rear lights - not me!

T
Tony Peart
Big cobber

Excellent product...........I am a long time bike riding tail light collector and rejector........this is by far the best one I have used

l
lesley mcnab
A great rear light!

This light is bright and charge lasts a long time. Easy to attach to the bike.

L
Luke Martin
Big Cobber ... clobbers all other tail lights!

What an outstanding light! I am scared to put it on "full-blast" mode for fear of upsetting motorists. I feel so safe and the many modes are excellent. Worth every cent! thanks KNOG

B
Brett Leslie
Great bright light

Very impressed with this light. Many modes but most importantly very bright so you can be seen for 1km.

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