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I replaced my old leathers this season and opted for a standalone airbag solution: the Alpinestars Tech-Air 5 Plasma. I wanted something slim, simple to use and effective across road, track and off-road riding—without subscriptions or constant app-management.
Why I skipped integrated systems
My decision to avoid the In&Motion setup offered by RST came down to one word: clunkiness. I preferred a plug-and-play unit I could take out of the box and wear immediately, with minimal fuss.
That need for simplicity shaped the rest of my evaluation. The Tech-Air 5 Plasma promised a lightweight, low-profile option that could live under different types of riding kit while protecting the torso and back.
Key specifications
The Tech-Air 5 Plasma is positioned toward the premium end of the standalone market, priced at £699.99. Alpinestars bills it as the company’s lightest, most compact Tech-Air system to date. In practice it weighs 1,530g, which the company says is more than 25% lighter than the standard Tech-Air 5.
Protection comes from an inflatable bladder combined with an integrated Nucleon Plasma back protector. The system covers the chest, ribs, shoulders and back and offers selectable modes for Street, Race (Track) and Off-Road riding.
Battery life is claimed to be up to 30 hours between charges. The battery charges from empty to full in roughly four hours, according to Alpinestars; in my experience it reached full much faster—closer to two hours—after the initial setup. The bladder is certified for up to six deployments before it requires replacement.
The system uses a single-canister inflator and, in certain markets, that canister can be user-replaced. An optional companion app exists to monitor system status, log rides and adjust settings, but it is not required for everyday use.
How it performs on the road, track and trail
Since receiving the vest I’ve used it across Europe—on circuits such as Jerez, Monteblanco and Modena, and during a range of on-road and off-road events. I haven’t had the misfortune to test it in a crash, so this review focuses on comfort, fit and day-to-day usability.
Once correctly positioned the vest largely disappears under my leathers. The slim profile allows the back protector to sit into the hump of a race suit without noticeable bulk. On the move, it feels unobtrusive and secure.
Heat is the main trade-off. Any under-jacket airbag adds an insulating layer, and the Plasma is no exception. During hot track days in southern Spain, airflow and cooling were reduced compared with wearing perforated leathers alone. While riding this was manageable; standing still in the pits it sometimes felt uncomfortably warm.
Getting the fit right
Positioning takes practice. The back protector must sit correctly or it can restrict movement, particularly when tucked into race leathers. I found the most reliable method involved rolling my shoulders and tilting my head back to help the unit settle. Having a second person assist makes the job easier.
Once in place, the vest stays put and is comfortable for long sessions. There is a short learning curve, but after a few rides it becomes routine.
Everyday quirks and usability
Alpinestars includes everything needed to start out of the box, and that plug-and-play convenience was a major reason I selected the Plasma. There’s little need to interact with the app unless you want ride logs or mode adjustments.
The magnetic front connector is secure when engaged, and the control unit confirms connection with a firm vibration. Early on I found it fiddly to mate consistently; I now connect the magnets just before zipping the vest, which removes the inconsistency.
Mode switching requires a specific sequence of button presses and hold times. It took a few rides to make the sequence second nature. That felt like user error rather than poor design once I’d practiced it.
Another practical downside is removal. A tight-fitting airbag combined with sweat and heat can make pulling the vest off a tussle—sleeves can come out inside out and the vest can feel sticky against the skin. On longer, hot days I reached for fabric fresheners more often than before.
The safety systems are designed to be robust. One journalist I know accidentally deployed his vest while taking it off: as the unit fell, the magnetic connectors reattached and triggered a deployment. The incident underscores that the system works as intended, but also that careful handling is important.
Durability and maintenance
The bladder’s six-deployment certification gives a clear maintenance timeline. Replacing the single-canister inflator is possible for users in some markets, which can simplify servicing after a deployment. The control unit and battery are straightforward to access once you learn the steps for opening the rear panel.
Alpinestars supplies an extensive manual—well over 70 pages—but in daily practice I rarely needed to consult it after the initial setup. The beginning routines are the most time-consuming part of the ownership curve.
Verdict
Set against a shortlist of criteria—lightweight build, low profile, multi-discipline flexibility and minimal dependency on subscription services—the Tech-Air 5 Plasma performs strongly. It is easier to live with than earlier Tech-Air versions and suits road, track and off-road use.
There are compromises: extra heat on hot days, a brief settling-in period to get fit and handling right, and a few operational quirks to learn. For riders seeking a standalone airbag that integrates cleanly under different riding kit and requires little ongoing interaction, the Plasma is a compelling option.
