Expertly designed for off-road racing, the S-M7 Cast Helmet is Alpinestars' advanced solution for riders seeking the perfect balance of superior ventilation, lightweight comfort, and elite protection. Featuring a multi-layer composite shell with integrated PLASMA technology and a patented visor release system, it delivers exceptional impact energy dissipation and rotational force protection. This ECE 22.06 certified helmet is hydration-system ready and includes a removable anti-microbial comfort liner.

Key features

Aerodynamic Design: Smooth, streamlined shell profile eliminates external channels and load points to maintain structural integrity during an impact.
Energy-Deflecting Shell: Engineered curved surface reduces friction and deflects impact forces away from the head to protect the skull, neck, and spine.
PLASMA Technology: Patented Alpinestars PLASMA integrated into side pads provides high-performance shock absorption to reduce injury risk in critical areas.
A-Head Fitment System: Patented technology allows for precise adjustment of the helmet's height and angle to ensure an optimized, personalized performance fit.
Patented Visor Release: Designed to detach automatically when subjected to impact energy greater than 15 Joules, reducing rotational injury risk regardless of impact direction.
Anatomical Shell Sizing: Available in 3 shell sizes across 6 consumer sizes (XS-XXL) to ensure a lightweight, comfortable, and effective fit for all riders.
Hydration System Ready: Features integrated internal channels on both sides of the shell to easily accommodate hydration system plumbing.

Protection

Multi-layer shell construction combines fiberglass, carbon, and Aramid fibers for high-performance impact protection and energy dissipation.
Patented A-Head Fitment System enables precise adjustment of helmet angle and height for a secure, optimized fit.
High-performance ventilation system featuring 20 individual ports (13 intake and 7 exhaust) for maximum airflow.
Eject Removal System compatible, featuring a removable insert on top of the EPS for emergency helmet removal.
Removable 3D foam comfort liner with anti-microbial treatment for hygiene and long-lasting freshness.
Customizable fit via genuine Alpinestars replacement cheek pads, compatible across all shell sizes.
Lightweight performance: ECE version weighs 1280g (Size Medium).
Certified to ECE 22.06 homologation standards for global safety compliance.

Construction

Shell construction utilizes advanced molding technology with a pre-preg composite layup for enhanced mechanical performance and ultra-light weight.
Unique shell layup process delivers effective impact protection, with linear and oblique performance exceeding current regulatory standard limits.
Rotational impact protection is provided by the internal EPS liner shape and specific coating, combined with a specially-developed comfort liner surface.
Alpinestars patented coating technology reduces rotational acceleration transmitted to the head, exceeding the ECE 22.06 Peak Rotational Acceleration standard by 76%.
Profiled chin bar engineered for proven impact protection.