Built for MX, Enduro, and off-road riding, the Alpinestars SM3 combines lightweight construction, advanced impact protection, and optimized ventilation for all-day comfort and performance.
Key Features
Advanced Shell: Thermo-injected polymer shell engineered for an excellent balance of strength and weight.
Lightweight: Medium size weighs approximately 1,310g (ECE) / 1,430g (DOT).
Ventilation: 10 air intakes and 7 exhaust ports maximize airflow and heat management.
Multi-Density EPS: Six EPS/EPP components with five densities provide targeted impact absorption.
Rotational Impact Protection: Specialized liner construction helps reduce rotational forces transmitted to the head during angled impacts.
Patented Visor Release: Designed to release at a predetermined force to help reduce neck loads during an impact.
Emergency Release System: Removable cheek pads allow for easier helmet removal after an incident.
Adjustable Fit: Crown and cheek pads are available in different thicknesses for a more customized fit.
Hydration Ready: Integrated hydration tube loops are built into the cheek pads.
Comfort Liner: Constructed with recycled materials.
Protection & Certification
The SM3 features an optimized chin-bar structure and shell thickness designed to exceed standard homologation testing requirements. Its inner and outer surfaces are engineered to help minimize the effects of oblique impacts.
The helmet uses a 25mm soft textile chin strap with stainless-steel D-rings for a secure fit.
Certifications: DOT & ECE 22.06
Fit & Comfort
The SM3's 3D-contoured comfort liner provides a secure, comfortable fit while allowing riders to fine-tune the fit with interchangeable crown and cheek pads.
