HJC · RPHA 1N
HJC RPHA 1N
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，适合中等至长椭圆形的头部。
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 RPHA 1N 盔型完美融合了流畅的设计风格与先进的工程技术，在赛道上提供无与伦比的性能与保护。其空气动力学设计能够轻松切开空气，在减少风阻的同时保持稳定且稳固的佩戴效果。通风系统经过精心打造，可提供最佳的气流，确保骑手在最激烈的骑行中保持凉爽和专注。凭借其流畅且流线型的外观，RPHA 1N 不仅是赛道上的强劲竞争者，更是一件时尚的表达。其先进的工程技术和尖端功能使其成为追求极致的骑手的终极选择。无论您是在挑战速度极限，还是仅仅享受一段充满激情的骑行，HJC RPHA 1N 都能为您提供全方位的保障。
HJC RPHA 1N 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 Track/Race 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 RPHA 1N 盔型配备了先进的安全技术，包括提供卓越冲击保护的 PIM+ 外壳。它还拥有舒适的设计，配备可调节的颊垫和透气通风系统，可减少长途骑行的疲劳感。Intermediate Oval 头型确保为中等至长椭圆形的头部提供稳固的贴合。
The HJC RPHA 1N is engineered as a high-integrity Track/Race protective system, utilizing a structural shell constructed from PIM+. 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 22.06, FIM 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 DOT FMVSS 218 standards for street use and FIM/ECE 22.06 for track use.
Regional Legality Guidance
Certification Documents & References
Interactive Size & Fit Finder
Intermediate oval 头型，适合中等至长椭圆形的头部。
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 |
|---|---|---|---|
| Black / | — |
HJC-R1-BLK | instock |
| Red Bull Austin / | — |
HJC-R1-RBA | instock |
| Quartararo Replica / | — |
HJC-R1-QUA | instock |
Geo Pricing & Availability
| Country | Price | Availability | Source | Updated |
|---|---|---|---|---|
| US | 699.99 USD | In Stock | Official | 2024-05-22 |
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Compatible Motorcycles for the HJC RPHA 1N
Aerodynamically sculpted for high-velocity chin-on-tank tuck, negative lift, and wide track peripheral visibility.
Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.