The Alpinestars SM3 Helmet is engineered for MX, Enduro, and off-road riding, delivering a balance of lightweight performance, advanced protection, and rider comfort. Its thermo-injected shell uses a specially formulated polymer blend with optimized thickness for enhanced impact resistance, while innovative safety features such as a low-friction EPS liner coating help reduce rotational forces during oblique impacts. Designed for demanding conditions, the SM3 offers excellent ventilation, a customizable fit, and a patented visor release system that reduces strain on the neck during crashes, making it a reliable choice for serious off-road riders.
Key Features
Lightweight thermo-injected shell with advanced polymer blend construction
Optimized shell thickness for improved impact protection and reduced weight
Advanced ventilation system with 10 air intakes and 7 exhaust ports
Low-friction EPS liner coating to reduce rotational acceleration forces
Patented visor release system to minimize neck strain during impact
Multi-density EPS liner (5 parts, 4 densities) for superior energy absorption
Hydration tube channels integrated into cheek pads
Removable, comfort-focused liner made with recycled materials
Customizable fit with interchangeable crown and cheek pads
Emergency Release System with removable cheek pads for safe helmet removal
Reinforced chin bar with enhanced impact performance beyond standard requirements
Soft textile chin strap with stainless steel Double-D rings for secure fit
