Name: Knog Big Cobber Rear
Brand: Knog
Availability: InStock
Rating: 80 (55 reviews)

80/100

BikeRide Score

Users (53 ratings)

Experts (2 reviews)

Where to buy

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Facts

Light Type

Rear

Mounting

Seatpost

Brand

Knog

Bike Type

Commuter, Road, Mountain

Lumens

270 Lumens

Battery Life

2 to 100 Hours

Power

Rechargeable

Weight

2.2 oz

Water Resistance Level

Waterproof

IP Rating

IP67

Summary of Reviews

We have read all expert and user reviews on the Knog Big Cobber Rear. In summary, this is what cyclists think.

6 reasons to buy

Reviewers praise the Big Cobber's brightness, saying it packs a punch.
The Big Cobber provides good visibility in daylight, according to testers.
The light’s curved shape provides above-average side-on visibility, which reviewers find especially beneficial for commuting.
This light comes with two mounts: one for standard seatposts and one for aero seatposts.
The Big Cobber remembers the last mode used.
Users can add, delete, or customize the modes using Knog’s app.

4 reasons not to buy

The Big Cobber Rear is 3.7” long and takes up a lot of space on the seatpost.
This light takes 5.5 hours to charge, which is long for a taillight.
The battery indicator is hard to see and only warns of low battery when it’s almost dead, according to reviewers.
A tester says the small button is difficult to push while wearing gloves.

Bottom line

The Knog Big Cobber Rear is a 270-lumen taillight. The eight included modes are customizable using Knog’s Modemaker app. This light comes with mounts for standard and aero seatposts. Owners praise the brightness and side-on visibility but say the button is small and difficult to press. The battery indicator is hard to see and it only lights up right before the charge is depleted. The Knog Big Cobber Rear’s overall visibility and features impress experts, although some feel alternatives like Lezyne’s Strip Drive Pro Alert offer better value.