Description
The Alpinestars SM3 Radium Helmet is engineered for MX, Enduro, and offroad riders seeking top-tier performance, protection, and comfort. Featuring a thermo-injected shell with a polymer blend and varied thickness for optimal impact protection and reduced weight, this helmet is DOT and ECE 22.06 certified. Its lightweight thermoplastic outer shell and composite fiber inner shell maximize impact resistance. The multi-density EPS liner, with polished surfaces and special coatings, enhances rotational impact management. With ten inlet and seven exhaust ports, ventilation is maximized, and the visor is designed to channel air for improved airflow. The comfort liner is made from recycled materials, and integrated hydration tube channels add convenience. The Emergency Release System and removable cheek pads enhance safety. A stainless steel D-ring chin strap ensures a secure fit. The helmet is finished in matte gray, black, and fluorescent yellow for standout looks.
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