The Alpinestars SM3 Radium Helmet Black White Grey Glossy (Size S) is a high-performance off-road helmet engineered for riders who demand superior protection, lightweight comfort, and advanced ventilation during motocross, enduro, and off-road riding. Built with Alpinestars’ racing DNA, the SM3 is designed to meet the needs of both amateur riders and professional athletes, offering a perfect balance of safety, durability, and performance.
At its core, the SM3 helmet features an advanced thermoplastic shell construction, engineered using high-quality injected materials that provide excellent impact resistance while maintaining a lightweight profile. This ensures that riders benefit from enhanced protection without experiencing excessive fatigue, even during extended riding sessions.
The helmet is designed to comply with ECE 22.06 certification standards, ensuring that it meets the latest safety requirements for impact absorption, penetration resistance, and overall structural integrity. This certification guarantees that the helmet provides reliable protection in demanding off-road environments.
One of the standout features of the SM3 Radium helmet is its optimized ventilation system, which includes multiple intake and exhaust vents strategically placed to maximize airflow. This system ensures effective heat dissipation, keeping the rider cool and comfortable even in extreme riding conditions or hot climates.
The helmet incorporates an extended visor design, specifically engineered for off-road riding to protect against mud, debris, and sunlight. The visor is adjustable, allowing riders to customize its position based on riding conditions.
Inside, the SM3 features a premium comfort liner system, constructed from moisture-wicking and anti-bacterial fabrics. The liner is fully removable and washable, ensuring hygiene and long-term usability. The ergonomic interior design ensures a secure and comfortable fit, reducing pressure points and enhancing rider focus.
Safety is further enhanced with an Emergency Release System (ERS), allowing quick and safe removal of cheek pads in case of an accident. The helmet also features a double D-ring closure system, providing a secure and race-proven fastening mechanism preferred by off-road riders.
The Black White Grey Radium graphic delivers a bold and modern aesthetic, combining aggressive styling with premium finishing. The glossy finish enhances the visual appeal while maintaining durability.
Advantages of the SM3 Radium helmet include:
- Lightweight construction for reduced fatigue
- Advanced ventilation for improved airflow
- Durable shell for impact resistance
- Comfortable and ergonomic fit
- Adjustable visor for off-road versatility
- High-quality interior for long-term comfort
This helmet is designed for riders who want reliable performance, protection, and style in off-road conditions. Whether you are riding on dirt tracks, trails, or rugged terrains, the Alpinestars SM3 Radium Helmet delivers consistent performance and rider confidence.
