Alpinestars SM3 Radium Youth Helmet Gray/Black/Yellow Yellow

The Alpinestars SM3 Youth Helmet is meticulously engineered for the next generation of riders, offering unparalleled protection and comfort for MX, Enduro, and off-road adventures. This lightweight helmet, featuring a distinctive Gray Black Yellow colorway, is specifically designed to meet the rigorous demands of young motocross enthusiasts.

Description

The Alpinestars SM3 Radium Youth Helmet sets a new standard for young riders seeking a high-performance off-road helmet. Its lightweight outer shell is crafted from a technologically advanced, impact-resistant thermoplastic, meticulously thermo-injected with a special polymer blend. This construction ensures an optimal balance of superior impact protection and reduced weight, making it ideal for energetic youth motocross helmet users. The innovative multiple-density inner liner is strategically designed for enhanced impact absorption, while both inner and outer surfaces are engineered to minimize the effects of oblique impacts. Alpinestars’ patented low friction coating within the EPS liner further reduces rotational acceleration forces, acting as a crucial slip plane for brain protection. With an advanced ventilation system featuring 10 inlets and seven exhaust ports, this lightweight youth helmet ensures maximum airflow and heat exchange, keeping riders cool and focused. The patented visor release system adds another layer of safety, reducing forces on the neck during impacts. Specifically contoured for youth, the SM3 Radium helmet also integrates hydration tube channels into the cheek pads for convenience and performance, making it a top choice for any young dirt bike helmet rider.

Features & Highlights

• Optimized Youth-Specific Design: Anatomically engineered and profiled for young riders, ensuring a precise and comfortable fit tailored for MX, Enduro, and general off-road use.
• Advanced Impact Protection: Features a lightweight thermo-injected shell made from a special polymer blend with varying thickness, combined with a multi-density EPS liner and Alpinestars' patented low friction coating to effectively absorb and dissipate impact forces, including oblique impacts.
• Enhanced Safety Systems: Equipped with an Emergency Release System for safe cheek pad removal, a patented visor release system to reduce neck forces, and a robust 25mm soft textile chin strap with stainless steel D-rings for a secure fit.
• Superior Ventilation & Comfort: Maximized airflow through 10 strategically placed inlets and seven exhaust ports, ensuring high levels of heat transfer and rider comfort even during intense activity.
• Adaptable Fit & Customization: Available in three shell sizes with crown and cheek pads (sold separately) for a tailored fit, allowing Youth Medium riders to transition to Youth Large as they grow, ensuring long-term usability.
• Eco-Conscious Comfort Liner: The helmet’s comfort liner is constructed using recycled materials, contributing to a lower carbon footprint without compromising on performance or comfort.

Technical Specifications

• Brand: Alpinestars
• Model: SM3 Radium
• Product Type: Youth Off-Road Helmet
• Shell Construction: Thermo-injected impact-resistant thermoplastic polymer blend
• Weight: 1060g (for SM3 Youth)
• Chin Strap: 25mm soft textile with Stainless Steel D-rings
• Ventilation: 10 intake vents, 7 exhaust ports
• Safety Features: Patented low friction coating, patented visor release system, Emergency Release System, multi-density EPS liner
• Colorway: Gray Black Yellow
• EAN: 8059347446868

Important to Know

• Crown and cheek pads for custom fit are available as genuine spare parts and are not included with the helmet.
• Youth Medium and Youth Large sizes share the same EPS, allowing for size configuration changes via separately purchased crown and cheek pads as the rider grows.