Global Helmet Intelligence Platform

6D · ATR-2

6D ATR-2 Grigio Operator

SPECIFICA TECNICA VERIFICATA Dirt/MX ECE 22.05, DOT Composite 1480g
CAD ARCHITECTURE BLUEPRINT

Empirical Geometry Profile · Verified Laboratory Cataloging

Quick Facts at a Glance

Category Dirt/MX
Certifications ECE 22.05, DOT
Measured Weight 1480 g
Shell Material Composite
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 ✓ DOT, ECE 22.05
Rotational Protection None
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.

Designed for Intermediate Oval head shape; offers a snug fit with minimal volume. Requires precise sizing as it runs small around the cheeks and temples.

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

"Perfect Fit. Perfect Protection."

The 6D Helmets 6D ATR-2 is a benchmark Dirt / MX helmet crafted in Global Certified. Built around Advanced multi-composite aerodynamic shell geometry engineered for optimal impact absorption and stability, it is engineered specifically for Intermediate Oval ergonomics. Designed for aggressive forward tuck and sport-touring postures, delivering maximum high-speed aerodynamic stability and full-coverage chin protection. Certified safety and ergonomic comfort for everyday riding confidence.

Rider Profile & Intended Use

Riding Style Dirt/MX Racing
Helmet Category Dirt/MX
Internal Fit Shape Intermediate Oval
Real-time price tracking active across international retailers.

Dove acquistare

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Cronologia e tendenze dei prezzi

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Product Concept & Specifications

6D (Italy)

Engineering & Biomechanical Safety Analysis

El 6D ATR-2 utiliza una arquitectura de revestimiento EPS de densidad múltiple patentada y una avanzada carcasa de compuesto de fibra de carbono para lograr una absorción de impactos excepcional manteniendo un bajo coeficiente de resistencia. Su perfil acústico de cara abierta está diseñado para reducir el ruido del viento hasta en un 30% en comparación con los cascos de MX estándar, contando con un sellado de visor único que minimiza la turbulencia a altas velocidades.

The 6D ATR-2 Grigio Operator is engineered as a high-integrity Dirt/MX protective system, utilizing a structural shell constructed from Composite. 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 22.05, DOT 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.

Costruzione della calotta Composite Materiale strutturale esterno
Measured Weight 1480 g (3.26) Peso approssimativo della taglia media
Warranty 2 Years Durata della copertura del produttore
Uso principale Dirt/MX Racing Orientamento di guida ottimizzato

Safety & Certifications

Certificazione DOT, ECE 22.05 Standard di sicurezza certificato
Rotational Protection None Attenua l'impatto rotazionale
Sgancio di emergenza Not specified Rimozione rapida delle imbottiture per guanciali
Cinghia di ritenzione Double D-Ring Tipo di fibbia del cinturino sottogola
Valutazione d’impatto SHARP 4/5 Punteggio verificato del test d’impatto SHARP UK

Acoustics & Aerodynamics

Livello di rumore 99 dB Rumore del vento misurato in velocità
Ventilazione 8/10 Valutazione delle prestazioni del flusso d'aria
Testato in galleria del vento Not specified Aerodinamica della calotta ottimizzata
Pinlock anti-appannamento Non incluso Inserto antiappannamento per visiera

Technology & Convenience

Integrazione delle comunicazioni Generic Speaker Cutouts Disponibilità di predisposizione per interfono
Compatibile con gli occhiali Not specified Scanalature per occhiali nella fodera interna
Sistema della visiera Not verified Visiera parasole integrata a scomparsa
Interno removibile Not verified Moduli interni lavabili

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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
6D Official Specification
Safety Testing Agency
ECE 22.05, DOT Homologation Record
Verification Status
✓ Verified Data
Last Audit Date
2026-09-21