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Knog · Rear bike light
A smart rear light for riders who want standout visibility from more angles, with less faff day to day.
$119.99
PriceIn stock, ready to ship
If you want a rear light that does more than just blink straight backwards, the Cobber Reflex is one of the more convincing options we’ve seen. Its 330° beam, Adaptive Reflex functions and easy strap fit make it a strong pick for commuting, bunch rides and mixed road use where side visibility matters just as much as outright brightness.
Sold by Ashburton Cycles
Verified store
Price
$119.99
Light output
250 lumens
Beam arc
330°
Runtime
Up to 70 hrs
The Knog Cobber Reflex Rear Bike Light is built for riders who want to be seen clearly in traffic, at intersections and anywhere cars approach from the side as well as from behind. The standout here is the 330° beam arc, which gives this light a much broader spread than a typical rear blinker. In real use, that wider wraparound output is exactly why Cobber lights have built such a strong following with commuters and road riders who care about side visibility as much as straight-line brightness.
What makes the Reflex version different is the extra intelligence. Adaptive Reflex technology adds features like brake-responsive brightening, tilt response when you lean the bike, and automatic on/off, so the light reacts more actively when riding conditions get busy. You also get ModeMaker 2.0 customisation if you want to fine-tune modes for longer runtime or a simpler setup. For everyday use, we like that it stays compact at 39 g, charges by USB-C, and includes multiple silicone straps to suit standard and aero seatposts.
This is a premium rear light, and it makes the most sense if visibility is your top priority rather than lowest-price shopping. If you ride in urban traffic, early mornings, winter commutes or shoulder-hour road loops, the Cobber Reflex gives you a noticeably more distinctive light signature than narrow rear-facing designs. It’s a smart choice for riders who want high visibility, easy fitment and modern sensor-based features in one tidy package.
Ideal for commuters, road riders and gravel riders who want a compact rear light with strong side visibility and smarter safety features for everyday riding.
330° wraparound beam
The broad beam arc helps you stand out not just from directly behind, but also from side streets, roundabouts and multi-lane traffic.
Adaptive Reflex response
The light reacts to speed changes, braking and bike lean, giving following traffic a clearer visual cue when your ride gets more dynamic.
Brake Mode built in
When you slow down, brightness increases automatically so riders and drivers behind you get a more obvious signal.
ModeMaker 2.0 customisation
You can tailor flash patterns, brightness and active modes to suit commuting, daytime visibility or longer battery life.
Compact and light
At 39 g, it adds very little bulk to the bike and is easy to leave fitted full-time.
USB-C rechargeable
Modern charging is simpler and easier to live with than older proprietary plugs, though you’ll need to supply your own cable.
Standard and aero seatpost compatible
The curved body and included strap options make it easier to fit cleanly on a wide range of seatpost shapes.
IP67 waterproof rating
Well suited to year-round riding and wet-weather commutes when your rear light needs to keep working through spray and rain.
Knog Cobber Reflex Adaptive Bike Road LED Bike Headlight Taillight Review - feat. Brake/Tilt Sensor
The Sweet Cyclists
Every detail as listed by the manufacturer.
Knog is an Australian accessories brand founded in Melbourne in 2002 by Hugo Davidson and Mal McKechnie. The company built its name on cycling products that combine industrial design, everyday usability and a distinct visual identity, and it has expanded from bike accessories into selected outdoor gear as well. Knog is especially well known for rethinking familiar products in a more design-led way, with major products including the Frog light, the Oi bell and the Cobber light range. Its products and brand have received multiple design awards over the years, including Australian Good Design and Eurobike-related recognition.
Knog · Rear bike light
A smart rear light for riders who want standout visibility from more angles, with less faff day to day.
$119.99
In stockLight output
250 lumens
Beam arc
330°
Runtime
Up to 70 hrs
Weight
39 g
If you want a rear light that does more than just blink straight backwards, the Cobber Reflex is one of the more convincing options we’ve seen. Its 330° beam, Adaptive Reflex functions and easy strap fit make it a strong pick for commuting, bunch rides and mixed road use where side visibility matters just as much as outright brightness.
The Knog Cobber Reflex Rear Bike Light is built for riders who want to be seen clearly in traffic, at intersections and anywhere cars approach from the side as well as from behind. The standout here is the 330° beam arc, which gives this light a much broader spread than a typical rear blinker. In real use, that wider wraparound output is exactly why Cobber lights have built such a strong following with commuters and road riders who care about side visibility as much as straight-line brightness.
What makes the Reflex version different is the extra intelligence. Adaptive Reflex technology adds features like brake-responsive brightening, tilt response when you lean the bike, and automatic on/off, so the light reacts more actively when riding conditions get busy. You also get ModeMaker 2.0 customisation if you want to fine-tune modes for longer runtime or a simpler setup. For everyday use, we like that it stays compact at 39 g, charges by USB-C, and includes multiple silicone straps to suit standard and aero seatposts.
This is a premium rear light, and it makes the most sense if visibility is your top priority rather than lowest-price shopping. If you ride in urban traffic, early mornings, winter commutes or shoulder-hour road loops, the Cobber Reflex gives you a noticeably more distinctive light signature than narrow rear-facing designs. It’s a smart choice for riders who want high visibility, easy fitment and modern sensor-based features in one tidy package.
Ideal for commuters, road riders and gravel riders who want a compact rear light with strong side visibility and smarter safety features for everyday riding.
330° wraparound beam
The broad beam arc helps you stand out not just from directly behind, but also from side streets, roundabouts and multi-lane traffic.
Adaptive Reflex response
The light reacts to speed changes, braking and bike lean, giving following traffic a clearer visual cue when your ride gets more dynamic.
Brake Mode built in
When you slow down, brightness increases automatically so riders and drivers behind you get a more obvious signal.
ModeMaker 2.0 customisation
You can tailor flash patterns, brightness and active modes to suit commuting, daytime visibility or longer battery life.
Compact and light
At 39 g, it adds very little bulk to the bike and is easy to leave fitted full-time.
USB-C rechargeable
Modern charging is simpler and easier to live with than older proprietary plugs, though you’ll need to supply your own cable.
Standard and aero seatpost compatible
The curved body and included strap options make it easier to fit cleanly on a wide range of seatpost shapes.
IP67 waterproof rating
Well suited to year-round riding and wet-weather commutes when your rear light needs to keep working through spray and rain.
Knog Cobber Reflex Adaptive Bike Road LED Bike Headlight Taillight Review - feat. Brake/Tilt Sensor
The Sweet Cyclists