Anatomically engineered and profiled specifically for youth and younger riders, the all-new SM3 Youth is optimized for MX, Enduro and Off-road use, and features a whole raft of technologies and innovations taken from Alpinestars range of adult helmets to deliver the optimal blend of performance, protection and comfort. This lightweight helmet features a thermo-injected shell incorporating a special polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection and light weight. Lightweight outer shell is constructed from a technologically advanced impact resistant thermoplastic in three sizes (Youth Small, Youth Medium and Youth Large. The SM3 Youth weighs 1060g (ECE) and 1170g (DOT). Separate versions of the shells for DOT and ECE requirements; the DOT certified version of the helmet’s inner shell is constructed with a composite fiber assembled between the outer shell and the EPS liner for maximum protection against impacts. The fit can be tailored to the rider’s head thanks to the helmet’s crown and cheek pads, which are available as genuine spare parts in different thicknesses. Youth Medium and Youth Large sizes share the same EPS size, which allows riders with an YM size to initially buy an YM helmet and then configure it to a Youth Large size as they grow via the crown and cheek pad spare parts. The Youth Small has a smaller EPS size and can be customized only via the cheek pads. Alpinestars extensive research has shown that the kids that wear a YS size are very small, typically 3 to 4 years old, and therefore they require a dedicated helmet fit. Multiple density inner liner ensures the helmet is equipped with the correct density in the correct area for enhanced impact absorption, while also helping reduce overall weight. The inner and outer surfaces are engineered to minimize the effects of oblique impacts. Alpinestars patented low friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces that can result from certain oblique impacts. This layer essentially acts as a slip plane to mimic the brain’s own low friction cerebrospinal fluid, which is the body’s natural defense against oblique impacts. Patented visor release system ensures the visor is released with the correct pre-determined amount of force, effectively reducing the forces on the rider’s neck during an impact. Comfort liner is constructed using recycled materials for a lower carbon footprint. Hydration tube channels are integrated into the helmet’s cheek pads for convenience and performance.
Designed specifically for young motocross, enduro, and off-road riders, the Alpinestars SM3 Youth Radium Helmet offers advanced protection, comfort, and performance tailored for children and young riders. Its anatomically engineered profile ensures a secure fit, while the lightweight thermo-injected shell combines impact resistance with minimized weight, making it suitable for extended wear during demanding activities. The helmet's shell is constructed from impact-resistant thermoplastic and comes in three sizes—Youth Small, Youth Medium, and Youth Large—allowing for precise fitting as children grow. The inclusion of a composite fiber layer in the DOT-certified version enhances impact absorption, providing peace of mind for parents and riders alike.
Features:
- Enhanced impact protection: Shell thickness and structure optimized for superior impact performance, especially around the chin area, meeting and exceeding standard testing conditions
- Adjustable fit: Crown and cheek pads are available in various thicknesses for a tailored fit, with a shared EPS size between Youth Medium and Large for growth adaptability
- Impact absorption technology: Multiple density inner liners and a low friction coating on the EPS liner reduce rotational forces and oblique impact effects, mimicking natural cerebrospinal fluid dynamics
- Safety features: Equipped with an emergency release system and removable cheek pads for quick and safe removal, along with a soft textile chin strap and stainless steel D-rings for secure fit
- Ventilation and airflow: Maximized ventilation through 10 inlet ports and 7 exhaust ports, with the visor designed to channel air effectively into the ports for enhanced heat transfer
- Comfort and convenience: Features integrated hydration tube channels in the cheek pads, a comfort liner made from recycled materials, and a patented visor release system to reduce neck forces during impacts
US Dollars
