SM3 Helmet - Radium - Matte Gray/Black/Yellow Fluo - Large
The Alpinestars SM3 Helmet Radium in large size offers advanced protection tailored for motocross, enduro, and offroad riders. Its varied thickness shell construction combines impact resistance with lightweight design, ensuring superior safety without sacrificing comfort. The thermo-injected outer shell is crafted from impact-resistant thermoplastic, featuring a polymer blend with strategically varied thicknesses to optimize impact absorption and weight reduction. The interior features a multi-density EPS liner with five different densities, effectively managing impact forces and enhancing rider safety.
Inside, the helmet employs a polished EPS liner with a special coating to minimize friction and rotational impact forces, providing an extra layer of protection during oblique impacts. The inner liner is composed of a composite fiber layer sandwiched between the outer shell and EPS foam, delivering maximum impact resistance. This construction is complemented by a custom fit system, allowing riders to fine-tune fit through adjustable crown and cheek pads, enhancing comfort during extended rides.
The ventilation system is designed for high airflow, featuring ten intake vents and seven exhaust ports. The visor is engineered to channel air into these ports, boosting cooling and heat transfer. Additionally, the visor release system is calibrated to reduce neck strain by releasing with controlled force during impacts. The helmet incorporates recycled materials in the comfort liner for an eco-conscious design and includes integrated hydration channels within the cheek pads for convenience. A soft 25mm textile chin strap ensures a secure fit, while stainless steel D-rings provide reliable fastening. Safety features include an emergency release system with removable cheek pads for quick and safe removal, along with a chin area optimized for superior impact performance.
Designed for high-performance offroad use, the Alpinestars SM3 Helmet Radium combines innovative construction, advanced materials, and thoughtful safety features to meet the demands of aggressive riding conditions. Its lightweight yet durable design, coupled with excellent ventilation and impact management, makes it an ideal choice for motocross, enduro, and offroad enthusiasts seeking maximum protection and comfort on the trail.
Features:
- Varied thickness shell construction for optimized impact protection and lightweight feel
- Thermo-injected outer shell from impact-resistant thermoplastic with strategic thickness variation
- Multi-density EPS liner with five different densities for tailored impact absorption
- Polished inner EPS liner with special coating to reduce friction and rotational forces
- Composite fiber inner shell between outer shell and EPS for maximum impact resistance
- Adjustable crown and cheek pads for a customizable fit
- High airflow ventilation system with ten intake and seven exhaust ports
- Visor designed to channel air into ventilation ports for enhanced cooling
- Visor release system with controlled force to reduce neck strain during impacts
- Recycled materials used in comfort liner for eco-conscious design
- Integrated hydration channels within cheek pads for added convenience
- Soft textile chin strap measuring 25mm for comfort and safety
- Stainless steel D-rings for secure fastening
- Emergency Release System with removable cheek pads for quick removal
- Chin area optimized for superior impact performance