Alpinestars S-M5 Action 2 Helmet Street It is leak-proof

It is leak-proof

Removable D3O® inserts for impact absorption and easy maintenance

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a Fidlock® magnetic buckle belt

Its versatile tread pattern adapts to different surfaces while resisting wear

Alpinestars S-M5 Action 2 Helmet Street It is leak-proofAlpinestars approach to the development of the SM5 helmet stems from decades of dedication to rider safety and innovation in motorsports. Drawing from a deep well of technical expertise and a passion rooted firmly in motocross, the creation of the SM5 reflects Alpinestars commitment to pushing the limits of performance and protection. Like all Alpinestars products, the SM5 is the result of meticulous planning, cutting edge research, and the insight of