The Alpinestars SM3 Helmet in the Heat Gloss Red/White/Black design is built for motocross, enduro, and off-road riding. This size XL helmet combines a lightweight thermoplastic outer shell with a polymer blend engineered using varied thicknesses for a balance of impact protection, comfort, and reduced weight. The SM3 model includes a composite fiber layer positioned between the outer shell and EPS liner to help enhance protection against impacts.
Fit and Comfort: The crown and cheek pads allow the fit to be tailored to the rider, while removable cheek pads support convenient adjustment and emergency removal. The comfort liner uses recycled materials and 3D-contoured foam for a secure, comfortable fit. Integrated hydration tube channels in the cheek pads add convenience for long rides, and the 1-inch soft textile chin strap with stainless steel D-rings provides a secure closure.
Impact Management: The six-piece EPS liner uses five densities to place the appropriate level of impact absorption in key areas while helping control overall weight. A low-friction coating on the main EPS liner is designed to reduce rotational acceleration associated with certain oblique impacts. The inner and outer surfaces are engineered to help minimize the effects of angled impacts, while the optimized chin area supports effective impact performance. The visor release system is calibrated to release at a predetermined force to help reduce forces transmitted to the rider’s neck during an impact.
Ventilation: Ten air inlets and seven exhaust ports promote airflow and heat exchange during demanding rides. The visor is shaped to direct air into the ventilation ports for improved circulation. The Alpinestars SM3 Helmet, manufacturer part number 8301026-3126-XL and vendor part number 8301026-3126-XL, is sized XL and designed to fit riders seeking a protective, ventilated helmet for motocross, enduro, and off-road applications.
Features:
- Size: XL
- Model: SM3 Heat
- Brand: Alpinestars
- Color: Gloss Red/White/Black
- Manufacturer Part Number: 8301026-3126-XL
- Vendor Part Number: 8301026-3126-XL
- Application: Motocross, enduro, and off-road riding
- Shell Construction: Thermo-injected polymer blend with varied thickness for lightweight impact protection
- Impact Protection: Composite fiber layer and six-piece, five-density EPS liner
- Rotational Impact Management: Low-friction coating designed to help reduce rotational acceleration
- Ventilation: Ten intake ports and seven exhaust ports
- Visor: Airflow-directing design with calibrated release system
- Fit System: Adjustable crown and cheek pads with removable cheek pads
- Hydration Compatibility: Integrated hydration tube channels in the cheek pads
- Retention: 1-inch soft textile chin strap with stainless steel D-rings
- Emergency Safety: Emergency Release System for easier cheek-pad removal