The Alpinestars Youth SM3 Radium Helmet is designed for young riders who need lightweight performance, dependable impact protection, and a secure, comfortable fit. This Small helmet features a thermo-injected shell made from an advanced impact-resistant thermoplastic polymer blend, with varying shell thicknesses engineered to balance protection and reduced weight. The Alpinestars Youth SM3 uses a multi-density inner liner that places the appropriate density in key areas to improve impact absorption while helping reduce overall helmet weight.
Engineered for off-road riding, the helmet’s inner and outer surfaces help minimize the effects of oblique impacts. A low-friction coating on the main EPS liner creates a slip plane intended to reduce rotational acceleration forces during certain angled impacts. Ten air inlets and seven exhaust ports maximize ventilation and heat transfer, while the visor directs airflow into the helmet for improved cooling. The visor release system is designed to release at a predetermined force, helping reduce forces transmitted to the rider’s neck during an impact.
Fit and convenience are enhanced by adjustable crown and cheek pads, available separately in different thicknesses for personalized sizing. The comfort liner uses recycled materials, and integrated hydration tube channels in the cheek pads support practical race and trail use. A soft 25 mm textile chin strap, stainless steel D-rings, and 3D-contoured foam help provide a stable, comfortable fit. The Emergency Release System and removable cheek pads allow trained personnel to remove the cheek pads while the helmet remains in place. This Alpinestars Youth SM3 is finished in Radium Matte Gray, Black, and Yellow Fluo and is identified by manufacturer and vendor part number 8301825-9510-YS.
Features:
- Thermo-injected shell: Advanced impact-resistant thermoplastic polymer blend with varying thicknesses for a balance of protection and reduced weight
- Lightweight construction: Technologically advanced outer shell helps reduce overall helmet weight
- Multi-density liner: Uses strategically selected foam densities to support impact absorption in key areas
- Oblique-impact design: Inner and outer surfaces are engineered to help minimize oblique-impact effects
- Low-friction EPS coating: Creates a slip-plane effect intended to reduce rotational acceleration forces during certain angled impacts
- Ventilation system: Ten intake vents and seven exhaust ports promote airflow and heat transfer
- Airflow visor: Directs air toward the helmet’s ventilation ports for improved cooling
- Visor release system: Releases the visor at a predetermined force to help reduce forces on the rider’s neck during an impact
- Customizable fit: Crown and cheek pads can be tailored to the rider and are available separately in multiple thicknesses
- Recycled comfort liner: Uses recycled materials to help reduce the helmet’s environmental impact
- Hydration tube channels: Integrated into the cheek pads for convenient hydration system routing
- Emergency Release System: Removable cheek pads support safer, easier helmet removal by trained personnel
- Secure retention: Soft 25 mm textile chin strap and stainless steel D-rings provide a stable fit
- Youth Small fit: Designed for young riders in a Small size
- Brand and part number: Alpinestars Youth SM3, manufacturer and vendor part number 8301825-9510-YS