For most of cycling's history, a helmet did one thing: absorb impact. Strap it on, ride your ride, and hope you never had to find out whether it worked. That's still the most important thing a helmet does. But something has shifted recently, and if you haven't been paying attention, the pace of change in helmet technology might surprise you. The helmet is becoming a safety system.
Here's a look at what's emerging, what's already available, and what it all means for everyday riders.
Beyond the Skull: Protecting the Brain from Rotation
Most cyclists know about MIPS, that little yellow dot on your helmet that signals a slip-plane layer designed to reduce rotational force during an impact. MIPS became nearly ubiquitous in quality helmets over the past decade, and for good reason.
Here's the backdrop. When your head hits the pavement, two things happen to your brain. First, it slams against the inside of the skull at the point of impact and rebounds against the opposite side, what's known as coup and contrecoup injury. Second, if the impact comes at an angle, your head rotates suddenly, and your brain, which is essentially a gel suspended in fluid, lags behind and shears against itself. Standard helmet foam handles the first mechanism reasonably well. It's the rotational piece that's been largely untreated until recently, and that's what MIPS and the newer technologies are designed to address.
Now there's a newer approach worth knowing about. A UK-based company has developed something called RLS, or Release Layer System, that takes a fundamentally different tack. Where MIPS works from the inside of the helmet, RLS puts its technology on the outside: panels bonded to the helmet shell that react, roll on polycarbonate bearings, and ultimately release on impact, redirecting rotational energy away from the brain before it ever gets transferred inward. Independent testing by ICUBE at the University of Strasbourg found that RLS-equipped helmets reduced peak rotational velocity by 56 to 66 percent compared to the same helmets without the technology. The first production helmets to incorporate RLS, from Canyon, debuted in late 2025 and immediately topped Virginia Tech's helmet safety ratings.
Then, roughly six months later, a small Vancouver-based startup called PIKIO Labs launched a road helmet called the Si that knocked RLS off the top of those same rankings, not by a little, but by the widest margin Virginia Tech has ever recorded. Where RLS uses external panels that release on ball bearings, PIKIO's approach (they call it OBLIK) breaks the shock-absorbing structure into independently moving modules connected by a deflection-sensitive nodal system, so each section of the helmet can respond differently depending on the angle and severity of the impact. The Canyon Deflectr RLS had scored 6.82, itself a record at the time. The PIKIO Si scored 4.61, more than two full points better. The cycling press described it as a leap, not a step.
It's worth pausing on what this sequence tells us. RLS was introduced in September 2025 as a genuine breakthrough, the best-tested helmet technology to date. Roughly six months later it had been surpassed, and not by a small margin. The PIKIO Si's score is more than two points clear of any helmet Virginia Tech has previously rated, the widest gap the lab has ever recorded. Cycling helmet innovation has been picking up pace since MIPS arrived in 2007, with WaveCel, SPIN, KinetiCore, and others adding to the field over the past decade. But two fundamentally different architectural approaches launching within six months of each other, both meaningfully outperforming the previous generation, is unusual even by recent standards. If you bought a helmet three or four years ago assuming it represented state-of-the-art protection, that assumption may already be out of date.
Crash Detection: When Something Goes Wrong
The other big story in helmet tech right now is crash detection, and it's starting to appear in cycling helmets in a serious way.
The Lumos Nyxel is a good example. Lumos is a Boston-based company that built its reputation on the Ultra, an integrated-lighting commuter helmet covered later in this post. The Nyxel is their newer urban model, a lighter and more refined evolution of that approach, and it adds an optional crash-detection upgrade through a partnership with Minnesota-based safety company Quin. The Quin Pod is a small chip that monitors acceleration and riding dynamics at over 5,000 data points per second. When a crash is detected, the system automatically alerts the rider's emergency contacts with GPS coordinates and can notify emergency services in 32 countries.
Think of it as the Apple Watch fall detection feature, but purpose-built for cycling. For solo riders, or anyone logging miles on quiet roads or trails at odd hours, that kind of automatic alert isn't a gimmick. It's a meaningful difference.
Being Heard Without Going Deaf to the World
One of the oldest debates in cycling: is it safe to ride with headphones? The short answer has always been no. Blocking ambient sound means missing the car that's coming up behind you, the shout from a fellow rider, the warning you needed to hear.
Ears-open audio changes that equation. The Coros SafeSound is a good example of where the category has landed. Coros's earlier helmets, the Linx and the Omni, used bone conduction, where transducers pressed against the cheekbones send sound through the skull directly to the inner ear. It worked, and it generated real buzz when it launched. But Coros has since moved on, replacing bone conduction with what they call the Ear Opening Sound System, or EOSS: small channeled speakers mounted on the helmet straps just in front of each ear that funnel sound toward the ear canal without sealing it off. Coros says the result is higher maximum volume, less leakage, and no need for the straps to press tight against the skin. Either approach gets you to the same place: you can hear navigation prompts or music and still hear traffic, conversation, and everything else happening around you. The SafeSound is also one of the lighter smart helmets on the market, weighing in close to non-smart road helmets.
Being Seen: The Visibility Problem
The Lumos Ultra, the helmet that established Lumos in this category, integrates front and rear LED lights, turn signals, and automatic brake lights, making cyclists visible from up to 1,475 feet away. Turn signals let drivers know you're about to change direction, and brake lights flash when you're slowing hard. It's the cyclist equivalent of a car's signal and brake light system, worn on your head where it's more visible than anything mounted to your frame. The Nyxel mentioned earlier carries forward the same lighting approach in a lighter, more recent design, which is part of why it's a natural platform for adding crash detection on top.
For riders in the Pacific Northwest, where grey skies, early sunsets, and wet roads are a real part of the riding calendar for a good chunk of the year, integrated visibility technology isn't a novelty. It's a practical response to actual conditions.
What This Means for Everyday Riders
The honest summary is that smart helmet technology now exists across a wide price range, and the floor for basic riders is rising fast. Crash detection via Quin is already shipping in production cycling helmets at accessible prices. Ears-open audio and integrated lighting have been refined over multiple product generations and are now reliable, mature features rather than experiments. And on the impact protection side, the RLS and PIKIO developments represent the most significant advances in concussion prevention since MIPS arrived, with the added twist that they're arriving on top of each other, rather than years apart.
That pace matters. It means that if you're in the market for a new lid this season, it's worth doing a few minutes of homework on Virginia Tech's ratings rather than just grabbing a familiar brand. And if you've been riding with the same helmet for five or more years, there's a real argument that what's on your head is now meaningfully behind what's available.
Sources & Further Reading
- Cycling News: New Release Layer System for helmets tops safety rankings at first outing
- BikeRadar: New helmet technology uses ball bearings to reduce risk of concussion
- Bikerumor: Ejecting Helmet Panels Land New RLS Safety Tech Top Spot on Virginia Tech's Ratings
- Bikerumor: Upstart PIKIO Labs' New Si Road Helmet with OBLIK Technology Tops Virginia Tech Ratings, By a Lot
- Cycling Weekly: The world's safest bicycle helmet? Meet the PIKIO Si
- BikeRadar: Coros SafeSound Road helmet review
- New Atlas: Coros takes a SafeSound approach to bike helmet audio
- Lumos: Lumos Ultra Smart Bike Helmet