Global Helmet Intelligence Platform

Arai · Defiant-X

Arai Defiant-X Vortex Blue

SPÉCIFICATION TECHNIQUE VÉRIFIÉE Full Face DOT, Snell M2020 PB-cLc2 1570g
CAD ARCHITECTURE BLUEPRINT

Empirical Geometry Profile · Verified Laboratory Cataloging

Quick Facts at a Glance

Category Intégral
Certifications DOT, Snell M2020
Measured Weight 1570 g
Shell Material PB-cLc2
Head Shape Fit Intermediate Oval
Retention System Double D-Ring
SAFETY & CERTIFICATIONS

Verified Safety Snapshot

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

Certified Homologation ✓ Snell M2020, DOT
Rotational Protection PB-cLc2 shell material
SHARP Impact Score 4/5 Stars (SHARP UK)
Retention Mechanism Double D-Ring
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.

Forme ovale intermédiaire, coussinets de joue réglables pour un ajustement personnalisable.

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

"Safety is our business"

The Arai Defiant-X boasts sleek styling that exudes confidence on the road, backed by advanced engineering that prioritizes both form and function. Its aerodynamic design reduces wind buffeting and drag, while its ventilation system, featuring a center duct and side intakes, regulates airflow and minimizes fogging. The result is a clear and unobstructed view, thanks to the Pinlock MaxVision ready visor. With its PB-cLc2 shell material and intermediate oval fit, the Defiant-X provides exceptional impact protection and a comfortable fit. Whether navigating twisty roads or cruising down the highway, the Arai Defiant-X is the ultimate touring helmet, delivering a perfect blend of style, performance, and protection.

Key Highlights:

Construction en stratifié complexe avec ceinture périphérique Coussinets de joue réglables Prêt pour visière Pinlock MaxVision Ventilation avec conduit central et entrées latérales

Rider Profile & Intended Use

Riding Style Racing
Helmet Category Intégral
Internal Fit Shape Intermediate Oval
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Où acheter

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Historique et tendances des prix

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Product Concept & Specifications

Arai (Japan)

Engineering & Biomechanical Safety Analysis

L'Arai Defiant-X Vortex Blue est doté d'une construction de coque avancée PB-cLc2 pour une absorption des chocs et une durabilité supérieures. Sa forme de tête ovale intermédiaire garantit un ajustement précis et confortable, tandis que les systèmes de ventilation sophistiqués assurent un flux d'air efficace pour garder le pilote au frais. Le casque intègre les technologies de sécurité emblématiques d'Arai, notamment une doublure multicouche pour une protection accrue et un système de fermeture sécurisé pour un ajustement parfait. Sa conception casque intégral offre une couverture complète, ce qui le rend idéal pour une conduite haute performance.

The Arai Defiant-X Vortex Blue is engineered as a high-integrity Full Face protective system, utilizing a structural shell constructed from PB-cLc2. 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 DOT, Snell M2020 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 PB-cLc2 Matériau structurel extérieur
Measured Weight 1570 g (3.46) Poids approximatif en taille moyenne
Warranty 2 Years Durée de la couverture du fabricant
Cas d’utilisation principal Racing Orientation de conduite optimisée

Safety & Certifications

Certification Snell M2020, DOT Norme de sécurité certifiée
Rotational Protection PB-cLc2 shell material Atténue l'impact rotationnel
Déverrouillage d’urgence Not specified Retrait rapide des mousses de joues
Sangle de rétention Double D-Ring Type de boucle de jugulaire
Évaluation d’impact SHARP 4/5 Score vérifié au test d’impact SHARP UK

Acoustics & Aerodynamics

Niveau sonore 85 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 Street Legal
Required: DOT

Compliant with Snell M2020 and DOT certifications.

🌐 CA Street Legal
Required: DOT, Snell M2020

Compliant with Snell M2020 and DOT certifications.

🇪🇺 EU Street Legal
Required: ECE 22.05

Compliant with ECE 22.05 certification.

🇦🇺 AU Street Legal
Required: AS/NZS 1698:2006

Compliant with AS/NZS 1698:2006 certification.

🇯🇵 JP Street Legal
Required: JIS T 8133:2015

Compliant with JIS T 8133:2015 certification.

Regional Legality Guidance

US

Status: Street Legal

Required: DOT

Compliant with Snell M2020 and DOT certifications.

CA

Status: Street Legal

Required: DOT, Snell M2020

Compliant with Snell M2020 and DOT certifications.

EU

Status: Street Legal

Required: ECE 22.05

Compliant with ECE 22.05 certification.

AU

Status: Street Legal

Required: AS/NZS 1698:2006

Compliant with AS/NZS 1698:2006 certification.

JP

Status: Street Legal

Required: JIS T 8133:2015

Compliant with JIS T 8133:2015 certification.

Certification Documents & References

  • DOT FMVSS 218 (US) - NHTSA - Reference
  • Snell M2020 (US) - Snell Memorial Foundation - Reference
  • ECE 22.05 (EU) - Economic Commission for Europe - Reference
  • AS/NZS 1698:2006 (AU) - Standards Australia - Reference
  • JIS T 8133:2015 (JP) - Japanese Industrial Standards - Reference

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VEHICLE SYNERGY & ERGONOMICS

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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
Arai Official Specification
Safety Testing Agency
DOT, Snell M2020 Homologation Record
Verification Status
✓ Verified Data
Last Audit Date
2026-09-10