SM3 Helmet - Radium - Gloss Black/White/Gray - Small
The Alpinestars SM3 Helmet Radium in Small offers a high-performance solution designed for motocross, enduro, and offroad enthusiasts. Crafted with a varied thickness shell construction, this helmet provides an optimal balance of impact protection and lightweight comfort. The thermo-injected outer shell is built from impact-resistant thermoplastic featuring a polymer blend with different thicknesses, engineered to absorb impacts effectively without adding unnecessary weight. The inner shell is composed of a multi-density composite fiber layered between the outer shell and EPS liner, maximizing impact absorption and rider safety.
Fit customization is facilitated by adjustable crown and cheek pads, ensuring a secure and comfortable fit for different head shapes. The helmet's six-piece EPS liner contains five different densities tailored to specific zones, effectively managing impact forces while reducing overall weight. Polished inner EPS liners with a special coating minimize friction during rotational impacts, and the design minimizes oblique impact effects through engineered surface features. Ventilation is optimized with ten inlet ports and seven exhaust outlets, complemented by a visor that channels airflow into these ports for enhanced cooling. The visor release system is engineered to release with a predetermined force, reducing neck strain during impact scenarios.
Constructed with recycled materials in the comfort liner, the helmet emphasizes sustainability without compromising safety. Integrated channels within the cheek pads accommodate hydration tubes, offering convenience during intense riding sessions. The soft textile chin strap, measuring 25mm, ensures a snug fit combined with rider comfort. Safety features include an emergency release system and removable cheek pads for easy and safe removal, even while the helmet is worn. The 3D contoured foam padding enhances comfort, while the chin area is specifically designed for superior impact performance. Stainless steel D-rings secure the helmet firmly, providing peace of mind during demanding offroad rides. Whether tackling rough trails or competitive motocross, the Alpinestars SM3 Radium Helmet delivers a blend of advanced protection, ventilation, and rider comfort for peak offroad performance.
Features:
- Varied thickness shell construction for optimized impact absorption and lightweight design
- Thermo-injected impact-resistant outer shell with polymer blend engineering
- Multi-density EPS liner with five different densities for targeted impact management
- Polished inner EPS liner with friction-reducing coating for rotational impact control
- Maximized ventilation with ten inlets and seven exhaust ports for superior airflow
- Visor channels air into ports for enhanced cooling and airflow management
- Visor release system designed to release with controlled force to reduce neck strain
- Comfort liner made from recycled materials for sustainability
- Integrated hydration tube channels in cheek pads for convenience
- Soft 25mm textile chin strap for optimal safety and rider comfort
- Emergency release system and removable cheek pads for easy, safe removal
- 3D contoured foam padding for rider comfort
- Chin area optimized for impact performance
- Stainless steel D-rings for secure fit and durability