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The Alpinestars SM3 Radium Helmet offers a superior combination of safety, comfort, and performance for off-road riders. Designed with cutting-edge technology, this helmet ensures you are protected and comfortable during intense trail adventures. Its innovative features include a multi-port ventilation system, providing maximum airflow to keep you cool on demanding rides, and a thermoplastic polymer shell that balances impact resistance with lightweight comfort. The snug fit is engineered for extended wear, offering both stability and breathability for long off-road sessions.
The SM3 helmet conforms to both DOT and ECE 2206 safety standards, ensuring reliable protection worldwide. Its patented visor release system helps minimize neck forces during impact by releasing the visor with a carefully calibrated force, enhancing rider safety. Additionally, the helmet utilizes Alpinestars' patented low-friction coating on the EPS liner, which reduces rotational acceleration forces during oblique impacts, mimicking the brain’s natural defense mechanism with an integrated slip-plane layer for added protection.
Constructed from a thermo-injected polymer blend with variable thickness, the helmet delivers optimal impact absorption without excess weight, making it ideal for demanding off-road conditions. Its design includes 10 intake and 7 exhaust ports to facilitate effective heat transfer and airflow, ensuring rider comfort during long, intense rides. The SM3 Radium Helmet not only meets safety and performance expectations but also stands out with its stylish gray, black, and yellow fluorescent matte finish, perfect for riders who want to combine safety with a bold look.
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