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HJC · RPHA 91 · HJC RPHA 91

HJC RPHA 91 Apex Red

DOT ECE 22.06
HJC RPHA 91 Apex Red
HJC RPHA 91 Apex Red
HJC RPHA 91 Apex Red

Design Concept & Background

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HJC RPHA 91 Apex Red is a high-performance Modular helmet engineered by HJC to meet high standards of safety and comfort. Inspect its detailed design background and specifications below.

Key Highlights:

PIM Evo shell construction Modular design Advanced ventilation system Multi-layer impact-absorbing liner Wide field of vision Intermediate oval fit

Rider Profile & Intended Use

Riding Style Touring
Helmet Category Modular
Internal Fit Shape Intermediate Oval
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Best price $549.90 Amazon (US)
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Price History

Product Concept & Specifications

HJC (South Korea)

Engineering & Technical Analysis

The HJC RPHA 91 Apex Red features advanced PIM Evo shell construction for superior impact resistance and lightweight durability. Its modular design offers versatility, while the intermediate oval head shape ensures a comfortable fit for most riders. The helmet includes advanced ventilation with adjustable airflow channels for optimal cooling, and its safety tech includes multi-density EPS liner and a Pinlock-ready visor to reduce fogging. The interior is lined with moisture-wicking, antimicrobial fabric for long-ride comfort.

Fit & Shell Structure

Intermediate Oval Shape

Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.

[MATR.SHEL] Shell Construction PIM Evo Outer structural material
[PHYS.MASS] Measured Weight 1700g (3.75) Approximate medium size weight
[COVG.YEAR] Warranty 1 Manufacturer coverage duration
[OPER.ROLE] Primary Use Case Touring Optimized riding orientation

Safety & Certifications

[SYS.CERT] Homologation ECE 22.06, DOT Certified safety standard
[SYS.PROT] Rotational Protection Multi-layer impact-absorbing liner Mitigates rotational impact
[SYS.EQRS] Emergency Release Not Equipped Cheek pad quick removal
[SYS.LOCK] Retention Strap Double D-Ring Chin strap buckle style

Acoustics & Aerodynamics

88 dB
Acoustics
8 /10
Ventilation

Quiet Index: Superior sound damping and isolated ear cavity structures. High flow channels optimize high-velocity dynamic ventilation.

[AERO.TEST] Wind Tunnel Tested No Optimized shell aerodynamics
[VISR.FOG] Pinlock Tech Not Included Anti-fog shield insertion

Technology & Convenience

[SYS.COMM] Comms Integration Generic Speaker Cutouts Intercom cutout availability
[FIT.GLASS] Glasses Friendly No Inner lining eyewear grooves
[VISR.SYS] Visor Shield Tech Single Visor Integrated drop-down sun visor
[FIT.LINR] Removable Interior Partial / Fixed Washable lining modules

Regional Legality & Compliance

🇺🇸 US Street Legal
Required: DOT

Meets DOT FMVSS 218 standards for street use in the United States.

Regional Legality Guidance

US

Status: Street Legal

Required: DOT

Meets DOT FMVSS 218 standards for street use in the United States.

Certification Documents & References

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