Ideal for commuters, road riders and gravel riders who want standout all-angle visibility and smarter rear-light signalling in busy real-world traffic.
The Knog Cobber Reflex Twinpack is a premium bike light set aimed squarely at riders who want to be seen clearly in traffic, at intersections and across multiple lanes. You get a 350-lumen front, 250-lumen rear, a 330° beam arc, and 360° visibility, which makes far more sense for commuting, bunch riding and mixed-surface road use than narrow, straight-only beams.
What really sets it apart is the Adaptive Reflex Technology. The front light responds to your bike’s lean angle, while the rear adds brake-style brightness spikes when it detects deceleration. In practical terms, it gives you a light set that reacts with you rather than just flashing away in the background. Automatic on/off also helps with day-to-day use, and both lights can be customised through ModeMaker 2.0 if you want to fine-tune brightness, flash patterns and compatible reflex settings.
For fit, this set is easy to recommend because it works with standard and aero cockpits, standard and aero seatposts, and front mounting options on the fork, handlebar or head tube. Each light is just 39 g, charging is USB-C, and the IP67 waterproof rating is exactly what we want to see for year-round Australian commuting. The main thing to know is that this is a visibility-first system, not a high-power trail light for unlit descents.
Adaptive Reflex front and rear behaviour
The front reacts to bike lean, while the rear responds to speed, lean and surface conditions to help keep your light pattern relevant as the ride changes.
Rear brake-style alert function
On compatible rear modes, brightness spikes under deceleration so traffic behind you gets a clearer cue that you're slowing down.
Big side visibility
The wraparound Cobber design throws a 330° beam arc, which is a real advantage at roundabouts, side streets and multi-lane urban roads.
Automatic on/off
Built-in sensing powers the lights up or down automatically, which saves battery and makes the set easier to live with day after day.
ModeMaker 2.0 customisation
You can customise compatible modes, brightness and selected reflex settings through the web-based software to better suit commuting, road or gravel use.
Works with modern bike shapes
The included mounting system is compatible with standard and aero bars, head tubes, and standard and aero seatposts, so it suits most current bikes.
USB-C rechargeable
Simple modern charging with a 4-hour charge time and no need for disposable batteries.
Lightweight twinpack
At 39 g per light, this set keeps bulk low while still offering premium visibility features.
General
Light modes
Electronics
Dimensions & weight
Materials & construction
Compatibility
Features
What's included
Adaptive Reflex Technology
This light set reacts in real time to the way you ride, adjusting output to your speed and bike angle so you stay visible on unpredictable roads without needing to think about it.
Tilt Reflex Mode
As you lean the bike, the light pattern responds in the same direction, helping keep you more visible through corners and changes in riding position.
Brake Mode
On the rear light, brightness spikes when you decelerate, giving riders and traffic behind you a clearer signal that you're slowing down.
ModeMaker 2.0
You can customise light modes and patterns to suit your riding, giving you more control than the standard presets.
Eye Saver
This front-light mode helps when the light is mounted horizontally by turning off half the LED board so less light shines up toward you.
Automatic On/Off Functionality
Built-in sensing powers the lights up or down automatically, saving battery and keeping the setup ready to ride.
Chip On Board (COB) LEDs
COB LEDs deliver a compact, high-impact light output that helps you stand out from more angles.
Integrated Quick Release Mount
The quick-release mounting system is built to give you a stronger, more secure hold across a wider range of frames, bars and seatposts while making removal easy.
Great for
Maybe not for
Front fits 22–32 mm+ bars and head tubes up to 200 mm; rear fits 22–32 mm+ and is compatible with standard and aero seatposts. The box includes 6 silicone straps plus an XL O-ring for front head-tube mounting. Charging is USB-C, but a cable is not included.
vs Garmin Varia RTL515
A strong choice if rear-traffic radar matters more to you than having a matched front-and-rear light set.
vs Lezyne Strip Drive 300+ Rear
A rear-light-focused rival that offers strong output and long runtime at a lower price, but it is not a complete smart twinpack.
vs CatEye ViZ300 (USB-C)
A straightforward rear commuter light with good visibility and a friendlier price, but without the Cobber Reflex system’s smarter behaviour.
Best used as a visibility-first set
This set makes the most sense when your priority is being noticed from more directions in traffic, not lighting up dark singletrack or fast off-road descents.
Great match for modern bike shapes
The aero compatibility is a real plus if you're running deeper road bars or an aero seatpost, where plenty of older light mounts can be awkward.
Custom modes are worth setting up once
If you like to fine-tune your setup, spending a few minutes in ModeMaker 2.0 can make the lights feel much more tailored to your commute or training route.
Know the mount style before you buy
The included strap-based mounting gives broad fit across bikes, but if you strongly prefer fixed quarter-turn style mounts, this set is more about flexibility than that sort of system.
Technically UnKonventional
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.
