Motocross Helmet Alpinestars Helm S-M3 Solid

The Alpinestars Helm S-M3 Solid is a high-performance motocross helmet engineered specifically for MX, Enduro, and off-road riding. This dedicated off-road dirt bike helmet features an advanced thermo-injected polymer shell paired with a multi-density EPS liner comprising 5 individual densities for superior energy mitigation. A patented low-friction interior surface actively reduces rotational acceleration to the brain during angled impacts, while the calibrated visor release mechanism protects the neck from excessive torsional loads. With 10 intake ports and 7 exhaust vents, air circulates continuously to keep you cool under demanding track conditions. For optimal comfort on the bike, pair this helmet with quality off-road goggles and a moisture-wicking base layer.

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• Material & Shell: Advanced thermo-injected polymer blend engineered with variable thicknesses for an optimal strength-to-weight balance (approx. 1430 g).


• Safety & Certification: Fully certified to the stringent ECE 22.06 and DOT standards, featuring patented rotational force reduction technology.


• Chin Bar & Retention: Heavily tested chin bar structure exceeding standard impact thresholds, secured by a 25 mm webbing strap and stainless steel Double-D rings.


• Emergency Release System: Fitted with an Emergency Cheek Pad Release system (ERS) enabling swift, safe helmet removal by medical personnel.


• Visor Mechanism: Patented release system ensures the peak detaches cleanly at a calculated load to minimize rotational neck strain.


• Ventilation: High-performance cooling architecture incorporating 10 intake vents and 7 exhaust ports for unmatched airflow.


• Comfort Liner: Removable and washable interior lining crafted from eco-friendly recycled fibers, complete with integrated hydration tube routing channels.


• Fit & Ergonomics: Unisex off-road profile with customizable crown pads and 3D cheek pads available in various thicknesses.


• Maten & Geslacht: Available in sizes S through 2XL for Men and Women (Unisex).