AlpineStars MX Pro Racing Helmet w/ DOT Certification

The Alpinestars SM8 Radium 2 Helmet redefines safety and style for motocross riders and off-road enthusiasts seeking top-tier protection without compromising on aerodynamics or comfort. Engineered with Alpinestars’ signature design philosophy, this helmet boasts a sleek, uninterrupted shell profile that eliminates external channels or protrusions—key features that could disrupt energy absorption during collisions or add unnecessary load points during impact. Its curved surface geometry is strategically shaped to reduce friction upon contact, deflecting force away from critical areas of the skull while minimizing strain on the neck and spine. Whether navigating technical trails or hitting high-speed jumps, riders benefit from seamless goggle integration via an adjustable aperture and optimized airflow through strategically placed vents that keep temperatures low during intense sessions.

At its core lies an innovative multi-layer composite construction designed to exceed industry safety standards. A high-density carbon outer shell forms the first line of defense against direct impacts, dissipating energy efficiently while maintaining structural integrity. Beneath this lies a unidirectional carbon layer engineered to enhance radial strength, resisting compression while allowing controlled deflection to further reduce force transmission. An aramid fiber layer adds critical resistance to penetration hazards commonly encountered in off-road environments. These layers are bonded using advanced epoxy resin technology, creating a cohesive structure that ensures energy spreads widely across the EPS liner—resulting in superior impact management compared to conventional designs.

Alpinestars’ rigorous testing at their dedicated Racing Development Center has validated the SM8’s performance superiority: it outperforms regulatory standards by reducing linear impact energy by 41% and rotational acceleration forces by 48%. This makes it ideal for riders tackling rugged terrains or high-speed racing where unpredictable conditions demand maximum protection.

Key Advantages Over Competitors
| Feature | SM8 Radium 2 Helmet | Competitor Helmets |
|————————|——————————-|——————————|
| Shell Material | Multi-composite (Carbon + Aramid) | Single-layer composites |
| Impact Performance | 41% better linear impact absorption | Meets basic regulatory limits |
| Ventilation | Aerodynamically optimized vents | Standard airflow systems |
| Fit Solution | Custom shell sizes per rider head shape | One-size-fits-most approach |
| Goggle Compatibility| Adjustable aperture for all goggles | Limited fit adjustments |

Designed for professionals and adventure seekers alike, the SM8 Radium 2 delivers unmatched safety in motocross racing or mountain biking while its lightweight build ensures all-day comfort during endurance rides. Its sleek aesthetic complements its technical prowess, making it a standout choice for riders prioritizing both performance and protection.