Alpinestars SM3 Helmet Radium Matte Gray/Black/Yellow Fluo Large (Part No. 8300826-9510-L)

The Alpinestars SM3 Helmet Radium combines advanced materials and innovative design to provide optimal protection and comfort for motocross, enduro, and offroad riders. Featuring a thermo-injected shell with varied thickness, this helmet offers a lightweight yet highly impact-resistant outer layer made from durable thermoplastic. The inner shell, constructed with a composite fiber, is engineered with multiple density EPS foam to absorb impacts effectively while reducing overall weight. This layered approach ensures superior impact management across different collision scenarios, especially in high-intensity riding conditions.
The helmet's fit can be customized to the rider's head shape using adjustable crown and cheek pads, ensuring a secure and comfortable fit during demanding activities. Its ventilation system, featuring ten intake and seven exhaust ports, maximizes airflow and heat transfer, keeping riders cool and focused on the trail. The visor is designed to channel air directly into these ports, enhancing airflow and rider comfort, while the visor release system is calibrated to release with the right amount of force, reducing strain on the rider’s neck during impacts.
Inside, the helmet is lined with a polished, friction-reducing EPS liner coated for rotational impact management, helping to mitigate oblique impact forces. The interior features a comfort liner made from recycled materials, aligning with environmental sustainability goals. Hydration tube channels integrated into the cheek pads offer added convenience for hydration during intense rides. The soft textile chin strap, measuring 25 mm, ensures a secure fit without sacrificing comfort. Safety features include an Emergency Release System with removable cheek pads and stainless steel D-rings for a snug and reliable fit. The chin area is optimized to enhance impact performance, providing added confidence in challenging offroad conditions.
Designed for high-performance offroad riding, the Alpinestars SM3 Helmet Radium emphasizes protection, ventilation, and rider comfort, making it an ideal choice for motocross and enduro enthusiasts seeking advanced safety features combined with a lightweight design.

Features:

• Varied thickness shell construction for optimized impact protection and lightweight performance

• Impact-resistant thermoplastic outer shell for durability

• Composite fiber inner shell with multi-density EPS foam for effective impact absorption

• Adjustable crown and cheek pads for a personalized fit

• Maximum ventilation with ten inlet and seven exhaust ports for superior airflow

• Airflow channels integrated into the visor for enhanced cooling

• Visor release system calibrated for optimal impact safety

• Friction-reducing EPS liner with rotational impact management coating

• Eco-friendly comfort liner made from recycled materials

• Hydration tube channels built into cheek pads for convenience

• Soft textile chin strap measuring 25 mm for safety and comfort

• Emergency Release System with removable cheek pads for safe removal

• Stainless steel D-rings for secure fit

• Chin area optimized for superior impact performance

ATTRIBUTES:

BRAND: ALPINESTARS

MPN: 8300826-9510-L