HJC · RPHA 91
HJC RPHA 91 Apex Blue
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 head shape ensures a comfortable fit for most riders.
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"
Elevate your ride with the HJC RPHA 91 Modular Helmet, engineered for superior performance and protection. This cutting-edge helmet boasts sleek styling, crafted to reduce wind resistance and enhance aerodynamics. Advanced engineering ensures optimal ventilation, keeping you cool and focused on the road. The RPHA 91 features a wide field of vision, providing unobstructed views of the surroundings. With its PIM Evo shell construction and multi-layer impact-absorbing liner, this helmet delivers unparalleled safety and protection. Whether you're tackling long highway stretches or navigating twisty mountain roads, the HJC RPHA 91 Modular Helmet is the ultimate touring companion, engineered to keep you protected and performing at your best.
Key Highlights:
Rider Profile & Intended Use
Où acheter
| Revendeur | Prix | Availability | |
|---|---|---|---|
| Amazon (US) | Voir le prix en temps réel | Voir sur le site | Voir le prix → |
Historique et tendances des prix
ℹ️ Helmetsan est un moteur indépendant de sécurité et d’aide à la décision pour les motos. Lorsque vous consultez des prix ou achetez via des liens de revendeurs, Helmetsan peut percevoir une commission d’affiliation, sans frais supplémentaires pour vous.
Product Concept & Specifications
HJC (South Korea)Engineering & Biomechanical Safety Analysis
The HJC RPHA 91 Apex Blue features advanced PIM Evo shell construction for superior impact resistance and lightweight durability. Its modular design offers versatility with a flip-up chin bar, while advanced ventilation channels ensure optimal airflow for comfort in all conditions. The intermediate oval head shape provides a snug fit, and premium interior padding enhances comfort during long rides. Safety is further bolstered by multi-layered EPS liner and advanced impact absorption technology.
The HJC RPHA 91 Apex Blue is engineered as a high-integrity Modular protective system, utilizing a structural shell constructed from PIM Evo. 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 22.06, 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.
Safety & Certifications
Acoustics & Aerodynamics
Technology & Convenience
Regional Legality & Compliance
Meets DOT FMVSS 218 standards for street use in the United States.
Regional Legality Guidance
Certification Documents & References
Interactive Size & Fit Finder
Intermediate oval head shape ensures a comfortable fit for most riders.
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.
Geo Pricing & Availability
| Country | Price | Availability | Source | Updated |
|---|---|---|---|---|
| US | 549.9 USD | In Stock | Manufacturer | 2022-01-01 |
Compare & buy
Add this helmet to the comparison tool to see it side by side with others, or check current offers from trusted retailers.
User Reviews
Be the first to share your riding experience with this helmet.
Share your experience
No reviews yet. Be the first to share your experience with this helmet!
More from HJC
HJC RPHA 91 Track TC-5
HJC RPHA 91 Rouge Apex
HJC i10 Anthracite
HJC i10 Solid TC-1
HJC i10 Rouge Course
HJC V10 Track Red
Compatible Motorcycles for the HJC RPHA 91 Apex Blue
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.