Alpinestars Bionic Action V2 Motocross Protection Jacket (Style S1XJ)

Our review of the Alpinestars Bionic Action V2 finds it to be a purpose-built, ultra-lightweight protection jacket for riders who need strong impact protection without sacrificing airflow. The single biggest reason to buy is the combination of certified Level 2 protectors and a highly perforated shell that delivers excellent upper body impact resistance while remaining noticeably breathable and comfortable during long rides. It is best suited to riders who prioritize mobility and cooling over heavy, bulky armor.

Key Features

• Highly perforated shell: Provides high levels of ventilation so riders stay cooler during intense riding or hot weather sessions.
• Triple segment Cell Technology back protector: Offers enhanced mobility while maintaining strong impact protection and a close, adaptive fit.
• Perforated protectors: The chest and back protectors are ventilated to improve breathability and reduce heat buildup without compromising safety.
• Adjustable elastic waist band: Ensures an optimized and secure fit so the jacket stays in place under movement and reduces shifting on impact.
• Padded chassis: Adds comfort and a close-to-body fit so the protection can be worn for longer periods without discomfort.

Who It's For

The Bionic Action V2 is aimed at motocross and off-road riders, and also appeals to mountain bikers who want CE and UKCA certified upper body protection with lightweight construction and high ventilation. Riders who value mobility and cooling during long, active sessions will appreciate the hybrid protector layout and the ergonomic segmentation of the back protector.

Those who should look elsewhere include riders who need a loose, heavily insulated jacket for cold-weather touring or those who require a wide range of sizing options without a tight, close fit; multiple customers report that the sizing runs small, so anyone between sizes should consider sizing up or trying it on before riding.

Pros & Cons

Pros

• Excellent ventilation from the highly perforated shell and perforated protectors for hot conditions.
• High-impact protection with Level 2 chest and advanced Cell & Flex Hybrid back protector technologies.
• Lightweight and comfortable to wear for extended rides thanks to the padded chassis.
• Secure fit aided by the adjustable elastic waist band which reduces shifting during movement.

Cons

• Sizing runs small for some customers, so you may need to order a larger size for a proper close fit.

Specifications

Our Verdict

The Alpinestars Bionic Action V2 is a strong choice for riders who want certified, high-impact protection in a breathable, ultralight package. It balances safety and mobility well and represents good value for those who prioritize ventilation and comfort, but be mindful of the sizing which runs small and may require sizing up for the correct close fit.

Frequently Asked Questions

Is this jacket certified for impact protection?
Yes, it is CE and UKCA certified with Level 2 chest protection and a Level 2 hybrid back protector.

Will it keep me cool during long rides?
Yes, the highly perforated shell and perforated protectors are designed to maximise airflow and reduce heat buildup during extended rides.

Does the jacket fit loose or tight?
The jacket is designed for a close-to-body fit with a padded chassis; note that customers report sizing runs small, so consider sizing up if you are between sizes.