Alpinestars Sm5 Beam Helmet
The SM5 Beam Helmet from Alpinestars is a high-performance motocross/off-road helmet designed for riders demanding lightweight construction, advanced impact protection, ventilation and comfort — ideal for MX, dirt-bike, dual-sport or trail riding.
Key Features
-
Lightweight thermo-injected polymer outer shell for impact resistance and structural strength, available in two shell-sizes for optimal fit.
-
Multi-density advanced EPS inner liner designed for optimal impact absorption across zones.
-
Dual-concept impact energy management: resin-coated inner shell surface reduces linear acceleration, plus an elastic joint between inner shell and comfort liner that allows independent movement under oblique impact — reducing rotational forces.
-
Emergency Release System (ERS) with removable cheek pads: enables safe, quick helmet removal by trained medical/emergency personnel if needed.
-
Quick-release, multi-angle visor system that sits flush to shell to minimize protrusion and enhance safety. No screws needed, simplifying maintenance or cleaning.
-
High ventilation design: shell air-inlets + exhaust ports and internal air-channel network for efficient airflow and heat dissipation — ideal for hot and intense riding or long trail sessions.
-
Hydration-tube compatible channels built into cheek pads — handy for long rides or enduro use.
-
Removable, washable comfort liner, with moisture-wicking and anti-microbial properties for improved hygiene and comfort over extended use.
-
Secure retention system: 26 mm textile chin strap, stainless-steel D-rings.
Materials / Protection
-
Outer shell: thermo-injected polymer shell (reinforced) with two shell-size design for improved structural uniformity and protection.
-
Inner shell / liner: advanced multi-density EPS for impact absorption, internal shell design to mitigate both linear and rotational impact forces.
-
Comfort liner & cheek pads: moisture-wicking, anti-microbial textile; removable and washable.
Certifications
Fit Guidance