HJC · i90
HJC i90
Quick Facts at a Glance
Verified Safety Snapshot
How this helmet’s verified certifications map to recognized safety homologations and crash testing.
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.
Verified Fit & Sizing Guide
Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.
Intermediate Oval 头型提供中性贴合，适用于大多数骑士。
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 First"
HJC i90 揭面盔专为现代骑士打造，拥有兼顾美学与功能的流畅设计。其先进的工程设计采用轻量化聚碳酸酯外壳，旨在提供最大程度的保护同时减轻重量。空气动力学设计在减少风噪和抖动方面发挥着至关重要的作用，确保更平稳的骑行体验。高效的通风通道即使在长时间佩戴下也能保持头部凉爽。HJC i90 的 Intermediate Oval 头型确保大多数骑士都能获得舒适的贴合感，而其 Advanced Integrated Matrix Plus (AIM+) 外壳则提供卓越的冲击保护。凭借其揭面设计和先进的安全功能，HJC i90 是追求风格、性能与保护平衡的骑士的完美选择。
HJC i90 represents an empirical engineering balance between aerodynamic stability and high-absorption cranial protection. Developed under HJC's strict quality assurance standards in South Korea, the shell profile is precision-molded to minimize high-velocity turbulent drag while maintaining comprehensive multi-axis impact attenuation.
Within the Modular segment, ergonomic weight distribution and acoustic insulation are paramount. The chassis geometry is tailored to distribute mass directly above the cervical pivot axis, counteracting high-speed buffeting and minimizing long-distance rider fatigue. Inspect the verified laboratory telemetry and structural analysis below for detailed performance parameters.
Key Highlights:
Rider Profile & Intended Use
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价格历史与趋势
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Product Concept & Specifications
HJC (South Korea)Engineering & Biomechanical Safety Analysis
HJC i90 采用聚碳酸酯外壳，兼顾轻量化耐用性与先进安全性。其揭面设计提供多功能性，而 Intermediate Oval 头型确保大多数骑士佩戴舒适。头盔包含高效通风通道以保持凉爽，其内衬设计旨在长途骑行中提供透气性和吸湿舒适感。
The HJC i90 is engineered as a high-integrity Modular protective system, utilizing a structural shell constructed from Polycarbonate. 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, ECE 22.05 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.
Safety & Certifications
Acoustics & Aerodynamics
Technology & Convenience
Regional Legality & Compliance
Meets FMVSS 218 standards for street use.
Compliant with provincial regulations where DOT or ECE 22.05 are accepted.
Regional Legality Guidance
Certification Documents & References
Interactive Size & Fit Finder
Intermediate Oval 头型提供中性贴合，适用于大多数骑士。
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.
Part numbers
| Product style | MFR. product # | SKU | Availability |
|---|---|---|---|
| Matte Black / | — |
HJC-I90-BLK | instock |
| White / | — |
HJC-I90-WHI | instock |
Geo Pricing & Availability
| Country | Price | Availability | Source | Updated |
|---|---|---|---|---|
| US | 249.99 USD | In Stock | Official | 2024-05-22 |
| CA | 339.99 CAD | In Stock | Official | 2024-05-22 |
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Compatible Motorcycles for the HJC i90
Acoustically insulated for laminar highway airflow, drop-down sun visor utility, and reduced neck strain.
Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.