Click & collect options available at checkout.

Knog Cobber Rear Light 50lm


The Knog Big Cobber Rear Light offers huge visibility, thanks not only to its large lumens output but also the clever 330 degree beam angle that means even traffic in side roads can see the light. The included rubber straps allow the light to be fitted to both round and aero tubes, whilst recharging is quick and simple by USB power so there is no reason not to be illuminated on every ride.

Flat Rate Shipping

This is a shipping service only for the bicycles we sell. It is for whole bicycles only. Parts and other smaller items ship regular postal mail.

Click & Collect

Bike collection during your chosen collection day and time.

Secure Payment

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

330º side visibility:
– the clever 330 degree beam angle that means even traffic in side roads can see the light

Programmable modes:
– You choose the light mode that suits you

For day and night:
– The truth is that daytime bike light use greatly improves rider’s safety. A Danish study’s* findings showed that through daytime bike light use cyclists reduced their chances of being involved in an accident by 19%.

Integrated USB rechargeable:
– You’ll never need to buy a battery again

100% waterproof:
– Come rain or shine, these lights just keep on working

Fits standard and aero (3 straps included):
– Silicone straps allow you to fit our lights on bars or posts, on any bike


  • Peak lumens: 50
  • 30 lumen-max steady: 1.4 hours Runtime
  • 50 lumen-flash: 7 hours Runtime
  • 10 lumen-eco flash: 40 hours Runtime
  • Weight: 25 grams

Product Specifications