Off‑road helmet engineered for MX and enduro with an advanced low‑friction liner, patented visor release and high ventilation.
The S‑M3 helmet is engineered for MX, enduro and off‑road use, featuring innovations and technologies optimized for ease of use, comfort and impact performance. 🪖
Shell construction features a thermo‑injected shell with a special polymer blend and variable thickness to deliver an optimal combination of impact protection and light weight. ⚙️
Alpinestars' patented low friction coating is applied to the inner part of the main EPS liner to reduce rotational acceleration forces that can result from certain oblique impacts. ↩️
This layer acts as a slip plane to mimic the brain's low‑friction cerebrospinal fluid, the body's natural defense against oblique impacts. 🧠
The patented visor release system ensures the visor releases at a predetermined force, effectively reducing forces on the neck during an impact. 🔒
Maximized ventilation and high levels of heat transfer thanks to 10 inlets and 7 exhaust ports for improved comfort on long rides. 🌬️
Materials: 48% acrylonitrile‑butadiene‑styrene, 20% polyurethane, 16% polystyrene (EPS), 6% polypropylene, 4% polyvinyl chloride, 2% ethylene‑vinyl acetate, 2% steel, 1% expanded polypropylene, 1% polyamide. 🧩
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