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 incorporating a special polymer blend with varying thicknesses, engineered 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 visor release at a predetermined force, effectively reducing forces on the neck during an impact.
Maximized ventilation and high levels of heat transfer exchange are provided by 10 inlets and 7 exhaust ports for sustained comfort.
Built for riders who demand protection and performance on every off‑road ride. 🏍️
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