Global Helmet Intelligence Platform

Arai · Defiant-X

Arai Defiant-X Anthracite

ZWERYFIKOWANA SPECYFIKACJA TECHNICZNA Full Face DOT, Snell M2020 PB-cLc2 1570g
CAD ARCHITECTURE BLUEPRINT

Empirical Geometry Profile · Verified Laboratory Cataloging

Quick Facts at a Glance

Category Szczękowy
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.

Intermediate oval fit, adjustable cheek pads for a customizable fit.

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:

Obwodowa konstrukcja z laminatu kompleksowego Regulowane poduszki policzkowe Wizjer gotowy na Pinlock MaxVision Centralny kanał wentylacyjny i boczne wloty powietrza

Rider Profile & Intended Use

Riding Style Turystyka
Helmet Category Szczękowy
Internal Fit Shape Intermediate Oval
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Historia i trendy cen

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Product Concept & Specifications

Arai (Japan)

Engineering & Biomechanical Safety Analysis

The Arai Defiant-X Anthracite features advanced PB-cLc2 shell technology for superior impact absorption and durability. Its intermediate oval head shape ensures a comfortable, secure fit, while advanced ventilation systems provide excellent airflow to keep riders cool. The full-face design offers maximum protection, and the helmet's ergonomic interior enhances comfort during long rides.

The Arai Defiant-X Anthracite 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.

Konstrukcja skorupy PB-cLc2 Zewnętrzny materiał konstrukcyjny
Measured Weight 1570 g (3.46) Przybliżona waga w średnim rozmiarze
Warranty 1 rok Okres ochrony producenta
Główne zastosowanie Turystyka Zoptymalizowana orientacja podczas jazdy

Safety & Certifications

Certyfikacja Snell M2020, DOT Certyfikowana norma bezpieczeństwa
Rotational Protection PB-cLc2 shell material Łagodzi skutki uderzenia rotacyjnego
Awaryjne odblokowanie Not specified Szybkie wyjmowanie poduszek policzkowych
Pasek mocujący Double D-Ring Typ klamry paska pod brodą
Ocena uderzeniowa SHARP 4/5 Zweryfikowany wynik testu uderzeniowego SHARP UK

Acoustics & Aerodynamics

Poziom hałasu 85 dB Zmierzony hałas wiatru przy prędkości
Wentylacja 8/10 Ocena wydajności przepływu powietrza
Przetestowany w tunelu aerodynamicznym Not specified Zoptymalizowana aerodynamika skorupy
Pinlock przeciw parowaniu Nie uwzględniono Wkładka przeciwmgielna do wizjera

Technology & Convenience

Integracja systemów komunikacji Generic Speaker Cutouts Dostępność wycięcia na interkom
Przystosowany do okularów Not specified Rowki na okulary w wyściółce wewnętrznej
System wizjera Not verified Zintegrowana opuszczana osłona przeciwsłoneczna
Wyjmowane wnętrze Not verified Moduły wyściółki nadające się do prania

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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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
2026-09-21