The Alpinestars Supertech M8 Radium helmet is a cutting-edge motocross lid engineered for riders who demand maximum protection, precision fit, and aggressive race-ready styling. Built from a multi-composite carbon shell, it blends lightweight performance with advanced impact energy management, giving you elite-level safety without sacrificing comfort. At its core, the SM8 features a layered construction of carbon fiber and aramid materials designed to disperse impact forces efficiently while maintaining structural integrity. This works alongside a multi-density EPS liner and integrated MIPS system to reduce both direct and rotational impacts—key factors in preventing serious head injuries. The helmet’s streamlined, smooth-profile shell eliminates unnecessary edges and load points, allowing it to glide on impact and reduce rotational stress on the neck and spine. Comfort and customization are just as dialed. The patented A-Head system lets you fine-tune the helmet’s internal positioning and tilt, giving you a locked-in fit and optimal vision alignment for aggressive riding. A fully optimized ventilation system—with multiple intake and exhaust ports—pushes airflow across your head to keep you cool during intense motos or long trail rides.