Knog Cobber Reflex Lights: Auto-Dimming Tech at $80 a Pop
Knog's Cobber Reflex lights auto-adjust brightness by speed and lean angle. At $80 each, the tech is clever — if the algorithm actually works.
Knog's new Cobber Reflex lights adjust brightness based on your speed and lean angle, which sounds clever until you realize you're trusting an accelerometer to decide when you need to be seen. The front puts out 350 lumens, the rear 250 — decent for commuting, marginal for unlit rural roads. Both are IP67 rated and USB-C rechargeable, which matters more than the marketing around "adaptive reflex technology." What actually matters: you can run the rear in low mode for 70 hours, meaning you might actually remember to charge it before it dies mid-ride.
Here's the catch: at $80 each, you're paying for ModeMaker 2.0 software customization that most riders will set once and forget. I can't verify how well the auto-dimming works in mixed traffic or whether the algorithm is aggressive enough to matter when a car's closing fast. If you want simple, bright, and cheap, this isn't it. If you're the kind of rider who fiddles with power meter data zones, the programmability might justify the price — but only if the sensor logic actually delivers. I haven't put miles on them yet, so I'm withholding judgment on whether "adaptive" beats "just leave it on high."
