The Complete Guide to Motorcycle Airbag Systems in 2026

Motorcycle airbag protection has moved decisively from a MotoGP-exclusive technology into a genuinely accessible category, but the range of systems now competing for a rider's attention makes the buying decision more complicated than it was even a few years ago. Four fundamentally different approaches are on the market in 2026, each solving the same core problem (detecting a crash and inflating fast enough to matter) with different assumptions about what's most likely to go right, and what's most likely to go wrong.

This guide covers all four in detail: Helite's tethered, mechanical system; Alpinestars Tech-Air's sensor-based electronic detection; Dainese D-Air's GPS-enabled system; and In&Motion's modular controller powering vests and jackets across six different clothing brands. It's written to help a buyer understand what's actually different between these systems, not just which one has the best marketing.

Every airbag system on the market splits into one of two categories based on how it decides a crash is happening. Tethered (mechanical) systems use a physical lanyard connecting the rider to the bike. When the rider separates from the bike beyond a set distance, the lanyard pulls a trigger mechanism, puncturing a CO2 cartridge and inflating the airbag. It's a purely mechanical sequence with no electronics, software, or algorithm making a judgment call. Helite is the most established example, and the system NFmoto integrates directly into its suits.

Sensor-based (electronic) systems use onboard accelerometers, gyroscopes, and in some cases GPS, feeding a processor running a crash-detection algorithm. Rather than waiting for physical separation from the bike, these systems analyse the bike's and rider's motion in real time and decide autonomously when a crash is occurring. Alpinestars Tech-Air, Dainese D-Air, and the In&Motion-powered systems all fall into this category, despite meaningful differences between them.

Neither category is objectively superior. Tethered systems trade broader crash-type coverage for mechanical simplicity and a trigger condition that's easy to verify and hard to get wrong. Electronic systems trade that simplicity for the ability to potentially detect a wider range of incidents (including crashes where the rider doesn't fully separate from the bike) at the cost of depending on charged batteries, periodic algorithm updates, and a probabilistic judgment about what a given pattern of sensor data actually means.

Helite's system works exactly as a tethered system should: a lanyard connects the rider's vest or suit to the bike, and when the rider separates beyond the trigger distance, the lanyard pulls taut, punctures a CO2 cartridge, and the airbag inflates rapidly, typically in the region of 80–100 milliseconds, which sits within the general range cited for mechanical tethered systems as a category. Helite airbag products are CE-certified under EU Regulation 2016/425, the standard European framework for personal protective equipment.

NFmoto is an approved Helite manufacturer, integrating the system directly into its one-piece and two-piece suit range rather than as a separate vest. The core advantage of this approach, and the reason NFmoto has built around it specifically, is mechanical reliability: there's no algorithm to potentially misread a situation, no battery to charge before a session, and no software to update. After a deployment, servicing is a straightforward CO2 cartridge replacement, which can generally be done quickly rather than requiring a multi-week manufacturer turnaround. See NFmoto's Helite-compatible suits page for the specifics of how this integrates into a custom build.

Tech-Air uses a sensor array, ranging from six sensors on entry-level models up to twelve on the top-tier Tech-Air 10, feeding an algorithm Alpinestars states has been refined against millions of kilometres of real-world riding data and thousands of documented crashes, drawing substantially on the brand's MotoGP relationship dating back to 2004. Deployment speed varies by model: Alpinestars cites 50 milliseconds for Tech-Air 3, 40 milliseconds for Tech-Air 10, and as little as 20 milliseconds for the newest Tech-Air 5 Plasma.

The Tech-Air range spans several distinct products aimed at different riding disciplines: Tech-Air Race and Tech-Air 10 for track and competition; Tech-Air 5/Plasma for street riding; Tech-Air 3 as a lighter, more affordable entry point for touring and commuting; and Tech-Air Off-Road, which runs a separately-tuned algorithm for off-road and adventure riding patterns. Back protection is certified to EN 1621-4, with specific levels varying by model.

Battery life runs roughly 24–30 hours of riding depending on model, with USB-C charging on most current units. Newer systems offer multiple riding modes (Street, Race, Off-Road) with different deployment sensitivity tuned to each, and typically require riding above a set speed threshold for a short period before the system is considered fully armed, reducing the chance of an unintended trigger while stationary or moving slowly.

Dainese D-Air was introduced to MotoGP racing in 2007 and later adapted into standalone road vests and jackets. Its electronic control unit uses seven sensors (three accelerometers, three gyroscope axes, and a GPS unit) sampling data 1,000 times per second. The inclusion of GPS is a genuine point of difference from some competing systems: Dainese states this context allows the algorithm to detect a wider range of incident types, including a stationary collision such as being rear-ended at a stoplight, which purely motion-based detection systems aren't designed to catch.

D-Air's standalone vests inflate in approximately 45 milliseconds. Some D-Air products are certified to EN 1621-4 Level 2 for both chest and back protection without using a rigid hardshell insert on the torso, with Dainese describing the airbag's engineered shape as absorbing up to seven times more energy than hardshell protection alone.

A practical consideration worth flagging plainly: several independent reviews report that D-Air vest deployments can require sending the unit back to Dainese for the airbag to be repacked, with real replacement gas cartridge costs and turnaround times running to several weeks — a real factor in total cost of ownership beyond the initial purchase price.

In&Motion works differently from the other three systems in a structural way worth understanding clearly, since it's a genuinely different business model, not just a different product. Rather than building a complete, self-contained airbag product under one brand, In&Motion develops a detection module, the "In&Box," that's licensed to and integrated into vests, jackets and leathers from a range of other brands, including Ixon, RST, Klim, Furygan, Held, and Tucano Urbano. The airbag garment itself differs by brand, but the underlying detection technology and control box are the same In&Motion system across all of them.

The practical implication is that one In&Box controller can, once activated, be used across any compatible garment from any of these brands. A rider isn't locked into a single manufacturer's product line the way they would be with a Tech-Air or D-Air purchase. In&Motion's detection uses seven integrated sensors and processes rider movement continuously, deploying in under 60 milliseconds according to the company, with multiple algorithm modes (Street, Track, Adventure and others depending on the specific garment) letting a rider tune deployment sensitivity to their riding environment.

Activating an In&Box controller requires a separate payment on top of the garment itself, either a one-off outright purchase (commonly cited around £400/€400) or an annual subscription (commonly cited around £120/€120 per year). This has been a source of some confusion and misinformation online; multiple independent reviewers have explicitly clarified that a subscription is not mandatory. The outright purchase option exists and has always existed alongside the subscription. One genuinely distinctive feature of the In&Motion model is that algorithm updates and improvements are pushed to all users regardless of which payment option was chosen, since the underlying detection software is shared across the whole user base.

In&Motion-equipped systems are generally certified under the French CRITT protocol rather than EN 1621-4, which is the certification standard used by Alpinestars, Dainese, and several other airbag brands. This is a real, specific technical distinction covered in more detail below, not just a labelling difference.

Airbag-specific certification is a genuinely separate question from general garment certification (EN 17092), and it's worth understanding the difference between the two protocols actually in use. EN 1621-4, used by Alpinestars, Dainese, and several other brands, tests using a narrow "kerbstone" striker (designed to represent hitting a narrow object like the edge of a car roof-rack, a fence post, or a kerb) against a hemispherical anvil shaped like a section of the rider's back or chest. The French CRITT protocol, used by In&Motion and Helite, tests impact using a flat striker against a flat anvil, a meaningfully different test geometry.

Because the two protocols test different impact geometries, direct comparison between a CRITT-certified product and an EN 1621-4-certified product isn't straightforward. A product isn't necessarily worse for being certified under one rather than the other, but a buyer comparing two airbag products with different certification labels should understand they aren't being tested identically, rather than assuming one number is directly comparable to the other.

The trigger mechanism behind each system has direct implications for which real-world incidents it's actually designed to respond to, and this is worth thinking through concretely rather than abstractly. A classic highside or lowside where the rider is thrown clear of the bike is the scenario every system handles well. A tethered system separates as the rider leaves the bike, and every electronic system's sensor package reads the abrupt deceleration and rotation clearly.

Where the systems diverge is in less clear-cut scenarios. A slow-speed tip-over where the rider doesn't fully separate from the bike may not generate enough lanyard travel to trigger a tethered system, while an electronic system's algorithm may or may not classify the motion pattern as a crash depending on how it was trained. A collision while completely stationary, being rear-ended at a light, for instance, is a scenario tethered systems aren't designed for at all, since there's no separation event to trigger on; this is the specific gap Dainese's GPS-inclusion in D-Air is marketed as addressing, though it's worth noting this remains a less common real-world crash type than a moving-speed incident for most riders.

A rider evaluating systems against their own actual riding (trackday sessions, road commuting, club racing) is better served thinking through which crash types are genuinely plausible for their situation than assuming broader theoretical coverage always translates to a meaningful real-world advantage. A track-focused rider whose realistic crash scenarios are almost entirely moving-speed highsides and lowsides may find a tethered system's coverage entirely adequate for their actual risk profile, even though an electronic system's broader theoretical coverage sounds more comprehensive on paper.

Certification requirements and marks for protective equipment are not static, and airbag systems are certified separately from the garment they're built into or worn with. A suit's own EN 17092 rating and an airbag's own certification (EN 1621-4 or French CRITT, as discussed above) are independent of each other. Post-Brexit conformity marking specifically has shifted more than once in the UK: current guidance recognises CE marking indefinitely for PPE sold in Great Britain, making the separate UKCA mark voluntary rather than a second mandatory requirement, though this position has changed before and is worth checking against current gov.uk guidance rather than assumed to be permanent. Whatever airbag system a rider chooses, checking that its specific certification is current and applicable to their region, rather than relying on marketing copy alone, is a reasonable step before relying on it.

The purchase price of an airbag system is only part of its real cost. Every system has an ongoing cost profile that matters more the more a rider actually uses it, and these differ meaningfully between categories. Tethered systems like Helite typically use a simple, low-cost CO2 cartridge that can often be replaced by the rider or a local service point after a deployment, with minimal downtime. Electronic vest systems generally require sending the unit back to the manufacturer after a deployment for the airbag to be repacked and the cartridge replaced, a process that can take weeks and, in the case of some D-Air products, involve a meaningful repack cost. In&Motion's model adds a distinct recurring cost layer on top of the garment price (the In&Box activation, whether paid outright or via subscription) which needs to be factored into any honest price comparison against a system where the detection hardware is simply included in the garment's price.

None of these cost structures is inherently better; they represent different business models with different trade-offs for different usage patterns. A rider who crashes rarely and rides one bike with one set of gear experiences these cost differences very differently from a rider racing a full season across multiple events.

Tethered systems have a straightforward, mechanically verifiable trigger condition: the lanyard either reaches its trigger distance or it doesn't. There's no algorithm that needs to correctly interpret ambiguous sensor data, which is a genuine reliability advantage in the specific sense that there's nothing to misread. The trade-off is coverage: a tethered system is designed around physical separation from the bike, so it isn't built to help in incidents where the rider doesn't separate, such as certain lowsides or being struck while stationary.

Electronic systems' reliability depends entirely on the detection algorithm correctly classifying real-time sensor data across an enormous range of legitimate riding inputs (hard braking, aggressive cornering, wheelies) without either failing to trigger during a genuine crash or triggering during aggressive-but-controlled riding. Every major electronic system's manufacturer points to large real-world and racing datasets behind their algorithm as the basis for confidence in this, and real user reports of both false positives and correct, life-saving deployments exist across every brand in this category. No system, mechanical or electronic, can honestly claim to guarantee correct behaviour in every possible crash scenario, and any manufacturer or reseller implying otherwise should be treated with appropriate scepticism.

A few honest questions narrow this down more usefully than comparing marketing claims. First: is mechanical simplicity or broader crash-type coverage the higher priority? Riders who value not having to think about charge state, software updates, or algorithm confidence generally lean toward tethered systems. Riders who want the broadest possible detection coverage, including scenarios without full physical separation from the bike, generally lean toward electronic systems.

Second: does the airbag need to move between multiple bikes or garments, or is it protecting one dedicated setup? A standalone vest (Tech-Air, D-Air, or an In&Motion-equipped garment) offers genuine portability across different jackets and suits. An integrated system, built into one specific suit, makes the most sense for a rider committing to that suit as their primary or only gear.

Third: what does total cost of ownership actually look like for the specific usage pattern in question, not just the sticker price, but realistic servicing frequency, downtime tolerance, and any recurring costs like In&Motion's activation fee? A rider who's crashed multiple times in past seasons should weigh post-deployment turnaround time more heavily than a rider who's never needed to test their system in anger.

NFmoto's own position, reflected in its choice to integrate Helite specifically, is that mechanical simplicity and fast, low-cost post-deployment servicing matter more than the marginal coverage advantage electronic systems claim, but this is a genuine trade-off, not an objectively correct answer for every rider. A rider already committed to an electronic vest they trust can still have a custom NFmoto suit built to accommodate it; see vest vs integrated for that specific decision in more depth, and Helite-compatible suits for how NFmoto's own integration works.