SM3 Helmet - Radium - Gloss Black/White/Gray - XL
The Alpinestars SM3 Radium Helmet offers advanced protection and comfort tailored for motocross, enduro, and offroad riders. Its variegated shell construction features thermo-injected impact-resistant thermoplastic with a polymer blend of varying thicknesses, providing an optimal balance between lightweight design and high-impact protection. The helmet's shell integrates a composite fiber layer sandwiched between the outer shell and EPS liner, delivering enhanced impact absorption and structural integrity. Designed for precision fit, the crown and cheek pads are adjustable, ensuring a secure and personalized fit for different head shapes.
Inside, the helmet employs a multiple density EPS liner with five distinct densities across a six-piece configuration, effectively managing impact energy while minimizing weight. The polished inner EPS surface has a special coating to reduce friction and facilitate rotational impact management, reducing the risk of injury during oblique impacts. The helmet*s internal surfaces are engineered to minimize the effects of oblique impacts, while a low friction coating on the liner helps decrease rotational acceleration forces. Ventilation is maximized with ten inlet and seven exhaust ports, complemented by a visor designed to channel airflow into the ports, improving airflow and rider comfort. The visor release system is calibrated to detach with a predetermined force, reducing strain on the rider*s neck during impacts.
The helmet features a comfort liner made from recycled materials, aligning with eco-conscious manufacturing practices. Integrated hydration channels in the cheek pads offer convenience during extended rides. The soft textile chin strap, measuring 25 mm, enhances safety and comfort, securing the helmet firmly in place. Safety features include an emergency release system and removable cheek pads for quick and safe removal, even while the helmet is worn. The 3D contoured foam padding ensures rider comfort, and the chin area is specifically optimized for superior impact performance. Stainless steel D-rings provide a secure fit, maintaining helmet stability during vigorous activity. Overall, the Alpinestars SM3 Radium Helmet blends innovative construction, superior ventilation, and safety features to meet the demands of offroad riders seeking high performance and protection.
Features:
- Varied thickness shell construction optimized for impact protection and lightweight design
- Thermo-injected outer shell made from impact-resistant thermoplastic
- Inner shell with composite fiber layer for maximum impact absorption
- Adjustable crown and cheek pads for a personalized fit
- Multiple density EPS liner with five densities in a six-piece configuration for impact management
- Polished EPS liner with friction-reducing coating for rotational impact control
- Designed to minimize oblique impact effects with engineered surfaces
- High ventilation with ten intake and seven exhaust ports for enhanced airflow
- Visor channels air into ports for improved cooling
- Visor release system ensures controlled detachment during impacts
- Eco-friendly comfort liner made from recycled materials
- Integrated hydration channels in cheek pads for convenience
- Soft textile chin strap measuring 25 mm for safety and comfort
- Emergency Release System and removable cheek pads for quick removal
- 3D contoured foam padding for rider comfort
- Chin area optimized for enhanced impact performance
- Stainless steel D-rings for a secure fit