ALPINESTARS(MX) SM3 Heat Helmet — Size XL
Advanced off‑road helmet with a thermo-injected shell, low-friction EPS liner and patented visor release for reduced rotational forces and neck loads.
Advanced off‑road helmet with a thermo-injected shell, low-friction EPS liner and patented visor release for reduced rotational forces and neck loads.
Designed for MX, enduro and off-road use, the SM3 Heat Helmet blends advanced protection with user-focused comfort and ease of use. 🔥
The thermo-injected shell employs a special polymer blend with varying thicknesses to deliver an optimal combination of impact protection and reduced weight.
A patented low-friction coating applied to the inner EPS liner creates a slip plane that reduces rotational acceleration in oblique impacts, mimicking the brain’s natural cerebrospinal fluid. 🧠
Patented visor release technology ensures the visor releases at a predetermined force to help reduce neck loads during an impact.
Maximized ventilation and high heat transfer are achieved through 10 inlets and 7 exhaust ports for consistent airflow on demanding rides. 🌬️
Composition by weight: 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.