At Bikers World, we know that for the avid competitive rider, an airbag system isn't a luxury—it's an essential piece of kit! With electronic airbag systems and body armour becoming more advanced, lighter, and more convenient, the only question is: which one?
In this tell-all guide, we take a deeper dive into the features of the Alpinestars Tech-Air 5 and give you our honest assessment. The Alpinestars Tech-Air 5 PLASMA Airbag System delivers the very latest in MotoGP-derived protection, in an ultra-lightweight vest you can truly forget you're wearing. Its primary draw is that it provides a comprehensive, full upper-body coverage, including chest, ribs, back, and shoulders, without the bulk.
Here at Bikers World, we've put this cutting-edge system to the test. We focused our assessment on fit, comfort during a full day's ride, and the real-world usability of its features, including the unique PLASMA back protector and various Riding Modes.
While demanding a premium price tag for the absolute pinnacle of envelope protection, the lightweight construction, superior fit, and multi-mode flexibility make the Alpinestars Tech-Air 5 PLASMA a worthy investment for riders who demand the best safety technology on the street, track, or trail.
Key Specs at a Glance
| Feature | Detail |
| Alpinestars Tech-Air 5 PLASMA price: | £699.99 (Available at Bikers World) |
| Protection Coverage | Chest, Ribs, Back, Shoulders |
| Back Protector | Nucleon PLASMA (CE Certified EN1621-2:2014 Level 1) |
| Airbag Certification | CE Certified EN 1621-4:2013 Level 1 (Full Back) |
| Riding Modes | STREET, OFF-ROAD, RACE (selectable via App) |
| Power Source | Integrated Lithium-Ion Battery |
| Battery Life | 30 hours of riding time |
| Deployment Time | Sub-50 milliseconds |
| Airbag Lifespan | Certified for up to six deployments (before needing replacement) |
| Canister Refill | User-replaceable Type II Canister |
| Jacket Compatibility | Any jacket with 4cm of space around the circumference of the chest. Or, Aplinestars compatible Airbag jackets. |
| Alpinestars Tech-Air 5 PLASMA UK release date: | Launched in September 2025. Available to order now! (Stock is hand-assembled in Italy and is often limited.) |
The Alpinestars Tech-Air 5 Airbag Vest Product Deep Dive: Features & Design
Unboxing & Setup
Setting up the Tech-Air 5 PLASMA is straightforward. Initial charging and system registration are managed via the Tech-Air App on your smartphone. The app handles firmware updates, mode selection (STREET, OFF-ROAD, RACE), and battery monitoring. It's an intuitive process that feels appropriate for modern electronic safety gear.
Design & Aesthetics: The 'Invisible' Protection
The first thing you'll notice is the ultra-slim profile. The PLASMA vest features an ultra-thin mono-layer stretch mesh at the collar, underarms, and front. This design is a noticeable improvement on previous generations, feeling significantly more adaptive and breathable.
The Nucleon PLASMA back protector is a key innovation. Constructed from a viscoelastic compound, it offers maximum weight savings and superior flexibility, contouring to your body for a truly "invisible" fit under your jacket and unrestricted movement.
This vest is hand-assembled in Italy, in the same building where Alpinestars develops MotoGP and F1 gear. This detail, while contributing to limited stock, speaks to the technology's pedigree.
The Alpinestars Tech-Air 5 Review
1. Primary Function: Adaptive Fit and Full Coverage
The vest's ergonomic sleeves and deeper-cut armpits deliver enhanced mobility, crucial for motorcycle riders. The system provides active protection across the chest, ribs, back, and shoulders.
Key Design Improvement: Strategically positioned cutaways on the airbag itself contour to the rider's body, providing superior impact protection while minimising material volume and contributing to the slim fit. It is also cut longer at the rear for enhanced coverage and protection, with a contoured, low-cut neck for reduced material contact with skin for added comfort.
Rating: 5/5 Stars ⭐⭐⭐⭐⭐
2. User Experience: Comfort, Climate, and Convenience
The breathable mesh construction and integrated back protector are specifically engineered to work with any Alpinestars jacket's ventilation system. For the street rider, this means significantly improved airflow compared to older, bulkier systems.
The ability to switch algorithms between STREET, OFF-ROAD, and RACE using the mobile app is a game-changer for multi-discipline riders. Each mode uses a dedicated, highly refined crash-detection algorithm tailored to the specific dynamics of that riding environment.
Rating: 4.5/5 Stars ⭐⭐⭐⭐⭐
3. Charging, Cable, and Cartridge Refill
Alpinestars Tech-Air 5 Recharge: The system uses the standard Alpinestars Tech-Air 5 charging cable (USB). The integrated Lithium-Ion battery offers approximately 30 hours of riding time on a single charge. The exact charging time is not specified, but it is typically a few hours for a full charge.
Cartridge Refill: The Tech-Air 5 PLASMA is a single-charge deployment system that allows a user-replaceable gas canister. The Alpinestars Tech-Air 5 refill is a major advantage for track-day riders or those who travel. After a deployment, the vest uses a Type II Inflator Kit (replacement argon gas canister), which can be easily installed tool-free. The airbag itself is certified for up to six deployments before it requires a full system service and replacement bladder.
Rating: 4.5/5 Stars ⭐⭐⭐⭐⭐
Alpinestars Tech-Air 5 Compatible Jackets
We often get asked about which jackets you can wear over the 5 PLASMA. But the beauty of the Tech-Air 5 system is its versatility. You do not need a specific "Tech-Air Compatible" jacket for the system to function.
- Non-Compatible Jackets: The system can be worn under any properly fitting textile jacket or leather jacket, provided there is at least 4cm of space around the entire circumference of your chest to accommodate the airbag's rapid expansion upon deployment.
- Tech-Air Compatible Jackets: However, we recommend pairing compatible Alpinestars jackets with the 5 PLASMA, as they feature built-in stretch panels (typically leather) specifically engineered to accommodate the airbag's inflation without requiring an extra 4cm of slack. This option offers the most precise and comfortable fit. We also recommend using it with an Alpinestars jacket to benefit from the specifically designed ventilation systems for optimised airflow and breathability.
You can visit the Alpinestars website to use their official compatibility checker for specific jacket models, but the 4cm rule is your universal guide for any non-Alpinestars garment.
Alpinestars Tech-Air 5 Size Chart
To ensure optimal function and safety, the Tech-Air 5 (and PLASMA) must be sized correctly. We recommend ordering the same size as your usual Alpinestars jacket, or measuring your chest accurately and using the chart below.
| Size | XS | S | M | L | XL | 2XL | 3XL | 4XL |
| Chest (CM) | 83.5-89 | 89-94.5 | 94.5-100 | 100-105.5 | 105.5-111 | 111-116.5 | 116.5-122 | 122-127.5 |
| Waist (CM) | 69-75 | 75-81 | 81-87 | 87-92 | 92-97 | 97-102 | 102-107 | 107-112 |
| Outer Arm (CM) | 57.5-59 | 59-60.5 | 60.5-62 | 62-63.5 | 64-65.5 | 65.5-67 | 65.5-67 | 67.5-70 |
| Height (CM) | 163-168 | 168-174 | 175-179 | 180-184 | 185-189 | 190-194 | 190-194 | 195-199 |
Note: The sizing is designed for a snug fit. If you are between sizes, consider ordering both to check the best fit, as you must ensure the outer jacket provides at least 4cm of space for safe deployment.
Pros and Cons
| Pros | Cons |
| Ultra-Lightweight PLASMA Construction – 25% lighter than the standard Tech-Air 5. | High Initial Price – Puts it at the top-end of the airbag market. |
| Full Upper Body Coverage – Chest, ribs, back, and shoulders protected. | Limited Stock – Hand-assembly in Italy can lead to inconsistent supply. |
| Three Dedicated Riding Modes – Street, Off-Road, and Race algorithms. | Service Costs – Like all electronic systems, it requires periodic servicing (not just canister replacement). |
| User-Replaceable Canister – Quicker and easier to get back on the road/track after deployment. | |
| Superior Breathability – Enhanced comfort, especially in warmer conditions. |
Tech-Air System Comparison: 3 vs. 5 PLASMA vs. 7X
| Feature | Tech-Air 5 PLASMA | Alpinestars Tech-Air 3 vs 5 PLASMA | Alpinestars Tech Air 5 vs 7x |
| Primary Use | Street, Light Off-Road, Track Day | Women’s, Commuting, Street Riding, Tour | Race/Track, Performance Road Riding |
| Wear Method | Under a jacket | Over or Under a jacket | Under a suit/jacket (Standalone or Integrated) |
| Protection Coverage | Chest, Ribs, Full Back, Shoulders | Chest, Full Back | Shoulders, Chest, Full Back (incl. Coccyx) |
| Back Protection | Integrated Nucleon PLASMA (L1) | Pocket for Passive Protector (sold separately) | Integrated Back Protector (Extended Length) |
| Algorithms | STREET, OFF-ROAD, RACE (3 Modes) | STREET (Single Mode) | RACE, STREET (2 Modes) |
| Sensors | 6 Integrated Sensors | 6 Integrated Sensors | 12 Integrated Sensors |
| Inflator Cartridge | User-replaceable Type II | User-replaceable | User-replaceable / Dual Deployment |
| Key Advantage | Ultra-lightweight, highly breathable, multi-mode flexibility, comprehensive coverage. | Water-resistant, packable, and can be worn over or under. Great for commuters. | FIM-homologated, extended coccyx protection, derived from MotoGP technology. |
The Final Verdict: Who Should Buy It?
The Alpinestars Tech-Air 5 PLASMA is not just an update; it's a genuine evolution that addresses key rider concerns around weight and breathability. It stands as a pinnacle of protection, offering the flexibility to cover a wide range of riding styles from track to adventure trail.
Buy the Tech-Air 5 PLASMA if... You are an avid biker who participates in multiple disciplines (Street, Track, or Off-Road), and you demand the lightest, most comfortable, and most technologically advanced full-coverage protection available.
Skip the Tech-Air 5 PLASMA if... You are riding off-road only. Alpinestars has specific models for this. The off-road version is more rugged and offers multiple deployments, while the latest edition, Tech-Air MX, is for pure track riders.
Overall Star Rating: 4.8/5 ⭐⭐⭐⭐⭐
Buy the Alpinestars Tech-Air 5 PLASMA in the UK today!
Ready to invest in the next level of motorcycle safety? Click the link below to view the latest stock and secure your own Tech-Air 5 PLASMA vest.
