The Alpinestars SM3 Helmet in Falcon Red Fluo, White, Blue, and Yellow Fluo is designed for motocross, enduro, and off-road riders who demand dependable impact protection, comfortable fit, and efficient ventilation. Its thermo-injected shell uses a polymer blend with strategically varied thicknesses to balance protection and weight, while the impact-resistant thermoplastic outer shell and composite-fiber inner shell help manage energy during impacts. This Large helmet is identified by manufacturer and vendor part number 8300927-3206-L.
The SM3 features a six-piece EPS liner with five different densities, placing the appropriate material in key areas for effective impact absorption and reduced overall weight. A polished EPS surface with a low-friction coating works with the comfort liner to help reduce rotational acceleration associated with certain oblique impacts. The inner and outer helmet surfaces are engineered to help minimize the effects of angled impacts, providing a carefully developed protection system for demanding off-road use.
Ten intake vents and seven exhaust ports promote airflow and heat exchange during intense riding. The visor is designed to direct air into the helmet ports, while its release system is calibrated to disengage at a predetermined force to help reduce stress on the rider’s neck during an impact. Recycled materials are used in the comfort liner to help reduce environmental impact, and integrated hydration tube channels in the cheek pads provide convenient routing for compatible hydration systems.
Rider comfort and practical safety features include a soft 25 mm chin strap, stainless steel D-rings for a secure fit, and adjustable crown and cheek pads for personalized positioning. The removable cheek pads and Emergency Release System support safer helmet removal by allowing the pads to be extracted while the helmet remains in place. Three-dimensionally contoured foam improves comfort, while the chin area is optimized for impact performance. The Alpinestars SM3 is a purpose-built Large off-road helmet for motocross, enduro, and trail applications.
Features:
- Protection: Thermo-injected polymer shell with varied thicknesses balances impact protection and reduced weight.
- Construction: Impact-resistant thermoplastic outer shell and composite-fiber inner shell provide layered protection.
- Impact Management: Six-piece EPS liner with five densities helps manage impact energy in targeted areas.
- Rotational Protection: Low-friction EPS coating helps reduce rotational acceleration during certain oblique impacts.
- Ventilation: Ten intake vents and seven exhaust ports support airflow and heat transfer.
- Visor: Air-directing visor design improves ventilation, while the release system helps reduce neck forces during an impact.
- Fit: Adjustable crown and cheek pads allow the helmet to be tailored to the rider’s head.
- Safety: Emergency Release System and removable cheek pads support safer helmet removal.
- Comfort: Recycled-material comfort liner, contoured foam, soft 25 mm chin strap, and integrated hydration tube channels enhance usability.
- Fastening: Stainless steel D-rings provide a secure and consistent fit.
- Fitment: Designed for motocross, enduro, off-road, and trail riding applications.
- Part Number: Alpinestars manufacturer and vendor part number 8300927-3206-L.