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Alpinestars · Alpinestars sm5

SM5 Matte Black

SPÉCIFICATION TECHNIQUE VÉRIFIÉE Full Face ECE 22.06, DOT FMVSS 218 Carbon Fiber Composite Shell with EPS Liner 1302g
CAD ARCHITECTURE BLUEPRINT

Empirical Geometry Profile · Verified Laboratory Cataloging

Quick Facts at a Glance

Category Intégral
Certifications ECE 22.06, DOT FMVSS 218
Measured Weight 1302 g
Shell Material Carbon Fiber Composite Shell with EPS Liner
Head Shape Fit Intermediate Oval
Retention System Quick Release Buckle
SAFETY & CERTIFICATIONS

Verified Safety Snapshot

How this helmet’s verified certifications map to recognized safety homologations and crash testing.

Certified Homologation ✓ ECE 22.06
Rotational Protection None
SHARP Impact Score 4/5 Stars (SHARP UK)
Retention Mechanism Quick Release Buckle
Emergency Release System Not specified

Safety standards compliance is based on official manufacturer documentation and public safety laboratory test results. Always verify regional compliance labels on the physical helmet prior to use.

FIT & SIZING

Verified Fit & Sizing Guide

Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.

Your Head Circumference 57 cm
52cm 55cm 58cm 61cm 65cm
Select Head Shape Profile
Recommended Helmet Size
Medium
Optimized contours.
Perfect for standard intermediate head profiles.

Conçu pour la forme de tête Intermediate Oval. Présente un ajustement sur mesure autour de l'occiput pour garantir un confort et une stabilité optimaux lors des manœuvres à haute vitesse.

How to measure

Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.

Design Concept & Background

"Ride Safe"

Découvrez le Alpinestars SM5 Matte Black : alliant un savoir-faire certifié mondialement à une visière optique de Classe 1 anti-rayures compatible avec les lentilles anti-buée Pinlock. Il dispose d'un système de déverrouillage rapide sans outil, d'une mousse EPS multi-densité avec doublure intérieure lavable et évacuant l'humidité, ainsi que des poches pour haut-parleurs. Parfait pour les motards exigeant une sécurité sans compromis et un confort aéro-acoustique optimal.

Rider Profile & Intended Use

Riding Style Dirt/MX
Helmet Category Intégral
Internal Fit Shape Intermediate Oval
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Où acheter

Revendeur Prix Availability
Amazon (US) Voir le prix en temps réel Voir sur le site Voir le prix →

Historique et tendances des prix

ℹ️ Helmetsan est un moteur indépendant de sécurité et d’aide à la décision pour les motos. Lorsque vous consultez des prix ou achetez via des liens de revendeurs, Helmetsan peut percevoir une commission d’affiliation, sans frais supplémentaires pour vous.

Product Concept & Specifications

Alpinestars (Italy)

Engineering & Biomechanical Safety Analysis

Doté d'une géométrie de coque aérodynamique en multi-composite avancé conçue pour une absorption optimale des chocs et une stabilité accrue, associé à une visière optique de Classe 1 anti-rayures compatible avec les lentilles anti-buée Pinlock et un déverrouillage rapide sans outil. L'intérieur utilise une mousse EPS multi-densité avec doublure intérieure lavable et évacuant l'humidité, ainsi que des découpes préformées pour une intégration fluide des systèmes de communication Bluetooth.

The SM5 Matte Black is engineered as a high-integrity Full Face protective system, utilizing a structural shell constructed from Carbon Fiber Composite Shell with EPS Liner. This structural layup is engineered to provide progressive kinetic energy dissipation during impact deceleration, distributing localized shock across outer lamina layers while minimizing deformation transfer into the internal multi-density EPS liner.

Certified to ECE 22.06, DOT FMVSS 218 protocols, the architecture is subjected to rigorous linear deceleration limits and oblique impact evaluations to mitigate rotational acceleration forces associated with diffuse axonal injury. For a deeper breakdown of rotational thresholds and impact testing speeds, consult our ECE 22.06 vs DOT vs SNELL engineering benchmark.

Internal geometry follows a Intermediate Oval cranial profile, designed to mitigate focal pressure hot spots across the parietal ridges while maintaining uniform radial clamping pressure along the zygomatic arch. Riders seeking optimal retention stability and break-in guidance should review the cranial aspect ratios and head shape guide as well as our 3D cheek pad density protocol.

Shell composite integrity and acoustic sealing are further optimized through channelized EPS porting and aerodynamic laminar profiling. To learn how shell composites resist stress cracking under prolonged environmental cycling, inspect the composite material comparative matrix.

Fit & Shell Structure

Intermediate Oval Shape

Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.

Construction de la coque Carbon Fiber Composite Shell with EPS Liner Matériau structurel extérieur
Measured Weight 1302 g (2.87) Poids approximatif en taille moyenne
Warranty 2 Years Durée de la couverture du fabricant
Cas d’utilisation principal Dirt/MX Orientation de conduite optimisée

Safety & Certifications

Certification ECE 22.06 Norme de sécurité certifiée
Rotational Protection None Atténue l'impact rotationnel
Déverrouillage d’urgence Not specified Retrait rapide des mousses de joues
Sangle de rétention Quick Release Buckle Type de boucle de jugulaire
Évaluation d’impact SHARP 4/5 Score vérifié au test d’impact SHARP UK

Acoustics & Aerodynamics

Niveau sonore 94 dB Bruit du vent mesuré à vitesse élevée
Ventilation 8/10 Évaluation des performances de ventilation
Testé en soufflerie Not specified Aérodynamisme optimisé de la calotte
Pinlock antibuée Non inclus Insert antibuée pour visière

Technology & Convenience

Intégration des communications Generic Speaker Cutouts Disponibilité d’une découpe pour intercom
Compatible avec les lunettes Not specified Rainures pour lunettes dans la doublure intérieure
Système de visière Not verified Écran solaire intégré escamotable
Intérieur amovible Not verified Modules de doublure lavables

Regional Legality & Compliance

🇺🇸 US Legal For Off-road Use
Required: DOT

Certified for use in the United States; meets DOT FMVSS 218 standards.

🇪🇺 EU Legal For Off-road Use
Required: ECE 22.05

Compliant with ECE 22.05 regulations for use in European markets.

🌐 CA Legal For Off-road Use
Required: DOT

Accepted for use in Canada under DOT standards.

Regional Legality Guidance

US

Status: Legal for Off-Road Use

Required: DOT

Certified for use in the United States; meets DOT FMVSS 218 standards.

EU

Status: Legal for Off-Road Use

Required: ECE 22.05

Compliant with ECE 22.05 regulations for use in European markets.

CA

Status: Legal for Off-Road Use

Required: DOT

Accepted for use in Canada under DOT standards.

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Data Confidence & Verification Provenance

Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.

Manufacturer Source
Alpinestars Official Specification
Safety Testing Agency
ECE 22.06, DOT FMVSS 218 Homologation Record
Verification Status
✓ Verified Data
Last Audit Date
2026-09-11