Description
RPHA 31 Helmet – Dereen – MC6HSF – Small
The HJC RPHA 31 Dereen motorcycle helmet combines advanced safety features with exceptional comfort for a secure riding experience. Crafted with the Premium Integrated Matrix (PIM) Evo shell and multi-density EPS foam, this helmet offers superior shock absorption and durability. Its aerodynamic design, honed through meticulous wind tunnel testing, ensures a quiet, stable ride by reducing wind noise and turbulence. The full front-to-back airflow system with two intake vents and four exhausts maintains optimal ventilation during extended rides, enhancing rider comfort in various conditions.
The helmet’s integrated sun visor features a dynamic multi-step system with anti-fog and smoke-tinted coating, providing clear visibility and effective glare reduction. The sun visor can be easily activated via a bottom-mounted operation system, allowing quick adjustments for different lighting environments. Additionally, the visor positioning can be fine-tuned up to 10 mm for personalized shading. The shield holder design minimizes noise and drag, ensuring a secure fit and enhancing overall stability at high speeds.
Inside, the RPHA 31 features the Premium Fit Interior with advanced anti-bacterial, moisture-wicking fabric that dries quickly, ensuring maximum comfort during long rides. The crown and cheek pads are removable and washable, with 3D contouring for a tailored fit. Reflective materials are incorporated for increased safety, while interchangeable cheek pads allow customization across all helmet sizes. The helmet is compatible with second-generation SMART HJC Bluetooth communication systems (sold separately), enabling riders to stay connected without distraction, and its elongated shell and extended chin EPS provide a full face-level fit for enhanced protection and confidence.
Features:
- PIM EVO Shell: Reinforced with Carbon-Aramid Hybrid and Natural Fiber for enhanced shock resistance and lightweight durability
- Aerodynamic Design: Reduces air resistance for stability at high speeds
- Full Airflow System: Includes two intake vents and four exhausts for optimal ventilation
- Integrated Sun Visor: Dynamic multi-step, anti-fog coated, smoke-tinted shield for clear vision and glare reduction
- Quick-Release Sun Visor: Easily activated via bottom-mounted operation for effortless adjustment
- Shield Holder: Minimizes noise and drag forces, ensuring a tight fit
- Premium Fit Interior: Moisture-wicking, anti-bacterial fabric with removable, washable crown and cheek pads
- Safety Reflective Materials: Improve visibility for increased safety
- Compatibility: Supports second-generation SMART HJC Bluetooth communication systems (sold separately)
- Full Face-Level Fit: Extended shell and chin EPS for comprehensive protection and comfort





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