The Alpinestars Youth SM3 Helmet in Medium is designed for young riders who need dependable impact protection, a secure fit, and comfortable performance during off-road riding. Finished in Falcon Red Fluo, White, Blue, and Yellow Fluo, this helmet features a lightweight thermo-injected thermoplastic shell made with a technologically advanced polymer blend. The shell uses varying thicknesses to help balance strength, impact protection, and reduced weight. The manufacturer part number and vendor part number for this helmet are 8301327-3206-YM.
The Youth SM3 uses a multiple-density inner liner with carefully selected materials positioned throughout the helmet to support effective impact absorption. Inner and outer surfaces are engineered to help minimize the effects of oblique impacts, while a low-friction coating on the primary EPS liner creates a slip-plane effect intended to reduce rotational acceleration forces. Ten air inlets and seven exhaust ports promote ventilation and heat transfer, with the visor designed to direct airflow into the helmet’s ventilation system. A visor release system is engineered to disengage at a predetermined force to help reduce stress on the rider’s neck during an impact.
Fit and everyday usability are supported by crown and cheek pads available in different thicknesses, allowing the helmet to be tailored to the rider’s head. The comfort liner uses recycled materials, and integrated hydration tube channels in the cheek pads help keep hydration systems organized. A soft textile chin strap provides rider comfort, while stainless steel D-rings help maintain a secure fit. The Emergency Release System and removable cheek pads allow trained responders to remove the cheek pads while the helmet remains in place, and the three-dimensional contoured foam supports a comfortable, stable fit for youth motocross and off-road applications.
Features:
- Thermo-injected shell: Lightweight impact-resistant thermoplastic construction uses a specialized polymer blend and varied shell thicknesses for balanced protection and comfort.
- Multiple-density liner: Engineered liner densities are positioned to support impact absorption in key areas while helping reduce overall helmet weight.
- Oblique-impact management: Low-friction inner and outer surfaces help minimize rotational forces associated with certain angled impacts.
- Low-friction EPS coating: Slip-plane layer is designed to reduce rotational acceleration forces during oblique impacts.
- Ventilation system: Ten intake ports and seven exhaust ports promote airflow and heat transfer through the helmet.
- Airflow-directed visor: Visor design helps direct air toward the helmet’s ventilation ports.
- Visor release system: Predetermined-release mechanism is designed to help reduce forces transferred to the rider’s neck during an impact.
- Customizable fit: Crown and cheek pads are available in different thicknesses to help tailor the fit.
- Recycled comfort liner: Comfort liner construction incorporates recycled materials to help reduce environmental impact.
- Hydration tube channels: Integrated cheek-pad channels provide convenient routing for hydration systems.
- Emergency Release System: Removable cheek pads support safer helmet removal by trained responders.
- Secure retention: Soft textile chin strap and stainless steel D-rings provide comfortable, dependable fastening.