SM3 Helmet - Radium - Matte Gray/Black/Yellow Fluo - Medium
The Alpinestars SM3 Helmet Radium offers advanced protection and comfort designed specifically for motocross, enduro, and offroad enthusiasts. Featuring a thermo-injected shell with varied thickness, this helmet provides an optimal balance of impact resistance and lightweight performance, ensuring riders stay protected without feeling weighed down. The impact-resistant thermoplastic outer shell is complemented by an inner shell constructed with a composite fiber layer sandwiched between the outer shell and EPS liner, delivering enhanced defense against impacts and oblique collisions. The five-density EPS liner system is engineered to absorb shocks effectively, with a polished coating that reduces friction and facilitates rotational impact management for improved rider safety.
Features:
- Varied thickness shell construction for optimized impact protection and lightweight comfort
- Thermo-injected shell with impact-resistant thermoplastic outer layer
- Composite fiber inner shell enhances impact absorption and structural integrity
- Multiple density EPS liner with five different zones for targeted impact management
- Low friction coating on EPS liner reduces rotational forces during oblique impacts
- Maximized ventilation with ten intake and seven exhaust ports for superior airflow and heat dissipation
- Visor designed to channel airflow into ventilation ports, improving rider comfort
- Visor release system ensures safe detachment during impacts, reducing neck forces
- Recycled material used in comfort liner for sustainability and eco-friendly design
- Integrated hydration tube channels provide convenience during intense rides
- Soft textile chin strap with 25 mm width for secure fit and rider comfort
- Emergency Release System with removable cheek pads for quick and safe removal
- 3D contoured foam offers enhanced comfort and fit
- Chin area engineered for superior impact performance
- Stainless steel D-rings ensure a secure and tight helmet fit