Tested By: Seiji Ishii
If you ride dirt bikes long enough, you’re going to crash. Whether it’s a front-end washout, a swap gone wrong, or a simple tip-over on a trail, it happens. What you’re wearing when it does is the only part you control.
Airbag protection has been used in road racing and rally for years, but until recently, it wasn’t something most off-road riders could access. The Alpinestars Tech-Air Off-Road system brings the same crash-protection technology to trail riders, enduro racers, and dual-sport riders.
I rode with the Tech-Air Off-Road on trail rides and general ADV and off-road riding here in the Texas Hill Country to see how it actually worked in real-world conditions. After spending time with it, it became clear that this system represents a very different approach to rider protection compared to the traditional chest protectors and under-protectors most of us have used for years.
This review covers how the Alpinestars Tech-Air Off-Road airbag system works, how it fits, and what it actually feels like to ride with it off-road.
What the Tech-Air Off-Road Is
The Tech-Air Off-Road is basically a protective jacket with built-in armor and an electronic airbag. The jacket includes CE-rated passive protection for the chest, back, shoulders, and elbows, but the defining feature is the airbag that deploys during a crash to protect the chest, back, shoulders, collarbones, and neck area.
Alpinestars has been developing the Tech-Air platform since 2017, and versions of the system have already been used in professional racing environments such as the Dakar Rally. The off-road version runs its own crash-detection algorithm designed to recognize riding situations common to off-road and ADV riding rather than street or motocross crashes.
Inside the jacket, motion sensors constantly track the rider and bike’s movements. A triaxial accelerometer and three gyroscopes feed data to the system’s ECU, which evaluates movement in real time.
If the system detects a crash scenario, the airbag inflates in roughly 50 milliseconds using gas-charged canisters mounted on the back of the jacket.
The system allows two deployments before service is required, thanks to the dual gas canisters. Replacement canisters are sold in a two-pack for about $210 and provide two additional deployments.
Riding Modes and Setup
The Tech-Air Off-Road system offers three riding modes: Enduro, Rally, and Street. Each mode uses a different crash-detection algorithm tailored to the type of riding. For most trail riding and woods riding, the Enduro setting is the correct choice.
The system activates automatically when the main zipper is closed. Once zipped, the jacket vibrates to confirm the system is armed and ready.
An LED display panel on the front shows battery level, system status, and riding mode. The system also connects to the Tech-Air smartphone app for firmware updates and diagnostics.
Battery life is rated at roughly 30 hours of riding time. In my testing, that estimate proved accurate. Charging is handled through a USB-C port and takes about four hours for a full charge. If you’re in a hurry, a one-hour charge provides roughly eight hours of riding time.
Fit and Protection Layout
The Tech-Air Off-Road fits more like a body protector than a traditional motocross chest protector. The mesh chassis holds the armor and airbag system tightly against the body so everything stays exactly where it should.
I’m 5’11”, 164 pounds with a 32-inch waist and tested a size M. The fit is intentionally snug, which helps keep the protective elements properly positioned on the body.
The unit weighs around 7 pounds, which is much heavier than a typical chest protector or under-protector. Standing in the garage, that weight was immediately obvious.
Alpinestars recommends wearing a riding jacket over the Tech-Air system since the unit itself is not abrasion-resistant. Whatever outer layer you wear needs enough room to allow the airbag to expand if it deploys.
The system is also not compatible with neck braces.
How It Felt On The Bike
Standing still, the Tech-Air Off-Road felt substantially heavier and more restrictive than typical off-road protection. It also seemed like it might trap more heat.
Once riding, most of those concerns faded quickly. The snug fit actually worked in the system’s favor because the armor stayed exactly where it should. Unlike many chest protectors, nothing shifted, rotated, or bounced around during aggressive riding.
Riding in the Texas Hill Country heat, the ventilation penalty was noticeable but manageable. The biggest difference compared to an under-protector was the added weight, not airflow. Like most body protectors, ventilation wasn’t nearly as good as with a simple roost guard.
When I rode back-to-back with and without the Tech-Air system, the extra weight and reduced airflow were obvious. That said, neither affected my mobility or normal riding movement on the bike. After a few rides, I stopped thinking about it, which is exactly what you want from protective gear.
Where I Would and Wouldn’t Use It
One place I personally wouldn’t run the Tech-Air Off-Road is in tightly wooded trails like we have here in Central Texas. It’s already brutally hot, you’re working hard the entire time, and there’s very little airflow through the trees.
The speeds are also relatively low compared to something like desert or ADV riding, so the heat penalty from the airbag system becomes a bigger factor for me.
In those conditions, I usually wear a lighter under-protector with integrated D3O armor instead. It’s cooler, simpler, and better suited for tight woods riding where managing heat and fatigue matters.
If I were desert or ADV riding, where speeds are much higher and crashes can be more violent, I would absolutely wear the Tech-Air system regardless of the heat.
Maintenance and Service
The electronic components and airbag system can be removed from the jacket chassis, allowing the garment itself to be washed. The modular design also makes servicing the system easier when canisters need replacement.
When the airbag deploys, the gas canisters must be replaced before the system can be used again. Fortunately, that process is relatively straightforward and far less expensive than replacing the entire unit.
Final Thoughts
I didn’t crash while testing the Tech-Air Off-Road, so I can’t personally speak to what deployment feels like in an actual impact.
What we do know is that airbags protect the body far better than traditional armor alone. There’s a reason organizations like the FIM now mandate airbag protection in rally competition.
The Tech-Air Off-Road does come with tradeoffs. It adds weight, it retains a bit more heat, and it costs significantly more than traditional off-road armor.
After riding with the system, though, those downsides felt minor compared to the level of protection it could provide.
If you spend a lot of time on a dirt bike or adventure bike at higher speeds—whether it’s trail riding, racing, or dual-sport miles—the Tech-Air Off-Road is one of the most serious protection upgrades you can buy right now.
