Alpinestars SM3 Radium ECE06/DOT Motorcycle Helmets

Engineered specifically for MX, Enduro, and off-road riding, the SM3 Helmet integrates cutting-edge innovations to enhance user comfort and provide elite-level impact protection.

Advanced Shell & Construction 

• Technological Shell Design: Features a thermo-injected shell with a specialized polymer blend and variable thickness for the perfect balance of weight and safety.

• Lightweight Performance: * ECE Weight: 1430g (Size Medium).

  • DOT Weight: 1460g (Size Medium).

• Multi-Density EPS: Utilizes 5 EPS inner parts with 4 distinct densities to effectively manage volume and impact distribution.

• Eco-Friendly Comfort: The comfort liner is crafted from recycled materials, reducing the environmental carbon footprint. 

Key Protection Technologies 

• Rotational Force Mitigation: Includes a patented low-friction coating on the inner EPS liner. This acts as a "slip plane" to mimic cerebrospinal fluid, reducing brain injury risks from oblique impacts.

• Patented Visor Release: The visor is designed to detach with a specific amount of force, significantly reducing stress on the rider's neck during a crash.

• Enhanced Chin Bar Safety: Optimized shell thickness in the chin area exceeds standard homologation requirements for superior impact performance. 

• Emergency Release System (ERS): Equipped with removable 3D contoured cheek pads for safe helmet removal by medical staff during emergencies.

• Secure Fastening: 25mm soft textile chin strap with Stainless Steel D-rings for a reliable and comfortable fit.

Ventilation & Rider Comfort 

• Maximized Airflow: Features a high-performance cooling system with 10 air inlets and 7 exhaust ports.

• Hydration Integration: Smart hydration tube channels are integrated directly into the cheek pads for mid-ride convenience.

• Customizable Fit: The crown and cheek pads are available in various thicknesses as genuine spare parts to tailor the fit to the rider's head.

Compliance & Standards 

• Global Certification: The SM3 conforms to both DOT certification and ECE 22.06 homologation for worldwide use.

• Optimized Surfaces: Both inner and outer surfaces are specifically engineered to minimize the dangerous effects of oblique impacts.