Alpinestars SM5 Sail Motorcycle HelmetsAlpinestars SM5 Sail Motorcycle Helmets The Alpinestars SM5 is the result of over five years of intensive study, development, and testing. It was designed to provide MX riders with a helmet that is purposefully engineered to deliver the ultimate balance of impact protection, lightweight performance, and superior comfort. High Tech Thermo Injected Shell Advanced Polymer Blend: Features a thermo injected shell with varying degrees of thickness to

anti-odor and washable inner liner keeps you dry through the climbs and descents

easy-to-layer fit

Durable outer construction with reinforced impact zones and abrasion-resistant panels enhances protection where it matters most

Functional Fit & Branding ✅

Compatible with I-Spec B components for streamlined cockpit setup

Spindle Diameter: 30mm

Specification Value Fits Model Force eTap AXS Brake Lever Use Left Brake Lever Actuation Hydraulic Color Black Defined Color Black

Stamp large recommended for shoe sizes: 10-15 (us) // 43-49 (eu

you are investing in a component designed to last a lifetime

Note on Fit:

contains no artificial colors or sweeteners

Ergonomics are at the heart of the design: pre-curved fingers reduce fatigue and enhance feel on the controls