Description
The Alpinestars SM3 Radium Helmet offers a perfect blend of performance, protection, and comfort for MX, Enduro, and Offroad riders. Featuring a thermo-injected shell made from a polymer blend and varying shell thicknesses, this helmet is engineered for optimal impact protection and lightweight performance. The lightweight outer shell is constructed from impact-resistant thermoplastic, while a composite fiber inner shell is assembled between the outer shell and EPS liner for maximum protection. Multiple-density inner liner ensures proper impact absorption with minimized weight. The helmet boasts a 6-piece EPS liner with three densities and a low-friction coating to reduce rotational acceleration during oblique impacts. With ten intake and seven exhaust ports, the SM3 maximizes ventilation and heat transfer. The visor not only enhances airflow but also features a quick-release system to reduce forces on the rider’s neck during impacts. Comfort is enhanced with a liner made from recycled materials, integrated hydration tube channels, and a soft textile chin strap. The helmet is equipped with an Emergency Release System and removable cheek pads for safety and convenience. Certified to DOT and ECE 22.06 standards, the SM3 Radium delivers uncompromising protection and style.
Key Features:
- Lightweight, impact-resistant thermoplastic shell
- Composite fiber inner shell for enhanced protection
- Multiple density EPS liner with low-friction coating
- Optimized ventilation with multiple intake and exhaust ports
- Visor with quick-release system for safety
- Emergency Release System and removable cheek pads
- DOT and ECE 22.06 certified
- Matte Gray/Black/Yellow Fluo, Medium
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