Alpinestars SM-5 Beam Helmet 800R Knurled clutch end for minimal

Knurled clutch end for minimal grip slippage

Engineered Ultra-High flow 365 vent control for all-year usability

Are you a backcountry enthusiast in the very finest tradition

and more power across the entire RPM range

Removable GoPro® camera mount

Alpinestars SM-5 Beam Helmet 800R Knurled clutch end for minimalAlpinestars SM 5 Beam Helmet The all new SM5 helmet is the result of more than five years of intensive study, development and testing. We scrutinized every possible aspect to engineer a helmet that is safe and thoughtfully designed to deliver optimal protection and comfort. This lightweight helmet features a thermo injected shell incorporating a special polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal