Engineered to perform on the track and the road, the lightweight S-R7 Helmet combines advanced aerodynamics, optimized airflow and cutting edge materials and Alpinestars patented PLASMA technology for superior protection performance. This helmet is also engineered to be seamlessly integrated with A-Connect; Alpinestars Communications System that utilizes a second generation Harman Kardon Sound System with 40mm speakers and advanced Ai-based noise cancelling technology for the ultimate in aural pleasure. 27 OUTER SHELL INNER SHELL Homologated to ECE 22.06 and DOT standards, the S-R7’s shell construction utilizes highly advanced molding technology with a multi-composite combination bonded with an advanced pre-preg epoxy resin process to maximize strength and mechanical performance. Featuring a carbon outer layer, an aramid fiber and a fiberglass layer, the shell is lightweight, yet ultra-protective. The fiberglass outer layer provides excellent strength and efficiency of energy dissipation over the shell, while the uni-directional carbon composite layer provides significantly greater radial strength around the shell, preventing compression yet allowing controlled deflection for reducing transmitted impact energy. This is then bolstered further by the aramid fiber and fiberglass layers providing critical penetration protection. All these layers are bonded together with an advanced epoxy resin that is already applied on the pre-preg fiber. The S-R7’s aerodynamic profile design offers a smooth, streamlined shell free of any external channels and features that might act as a load point in an impact or compromise the overall integrity of the helmet’s construction, and is equipped with a recess at the collarbone area that prevents the shell from coming into contact with the body in a slide, thereby significantly reducing the risk of collarbone injuries. The inner shell is made in multi-density EPS material, to permit the required impact absorption properties exactly where they are required. There are 7 different pieces, in six different densities, and each piece is strategically positioned for maximum impact energy dissipation. This energy management performance is bolstered even further with the two PLASMA collarbone sections: Alpinestars patented PLASMA technology is strategically-integrated into the SM7’s collarbone cutaways for high performance shock absorption in a critical area, significantly reducing the risk of injuries. The EPS liner, just like the outer shell, has its own unique dimension for each helmet size. The EPS surface itself is flush, and equipped with Alpinestars patented specific coating for proven rotational impact protection. This solution 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. This decrease in the rotational acceleration of the brain inside the skull after impact reduces the risk of concussion and other brain injuries: the S-R7 exceeds the ECE 22.06 Peak Rotational Acceleration standard by 76%. 20
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