HJC RPHA 12

The HJC RPHA 12 is a full-face sport helmet built on HJC's PIM EVO construction, combining carbon-aramid fiber, carbon fiber, glass fiber, organic non-woven fabric, and natural linen fiber into a lightweight yet rigid shell. Developed using HJC's proprietary wind tunnel laboratory and CFD technology, the RPHA 12 targets sport riders who demand aerodynamic refinement and all-day comfort across track and street use.

Premium Integrated Matrix EVO Shell

• PIM EVO construction combines carbon-aramid fiber, carbon fiber, glass fiber, organic non-woven fabric, and natural linen fiber
• Lightweight yet robust structure with enhanced shock-resistant performance
• Developed and refined using HJC's in-house wind tunnel laboratory and CFD technology

Advanced Channeling Ventilation System

• Sets new industry standards in aerodynamics and ventilation
• Strategically positioned intake and exhaust vents channel air from the front to the back of the helmet

HJ-42 Aerodynamic Shield

• Curved shield design reduces air drag and wind noise
• Unique 2-way pivot ratchet system ensures a tighter seal against the elements
• Optimized rear spoiler and shell shape significantly reduces lift and drag for high-speed stability

RPHA Premium Fit Interior

• Advanced anti-bacterial fabric with enhanced moisture-wicking and quick-drying function
• 3D contour cheek pads with reflective material for low-light visibility
• Interchangeable cheek pads across all sizes for a custom fit
• Fully removable and washable interior

Emergency Pull Tab

• Built-in emergency pull tab allows quick helmet removal in critical situations

Construction: PIM EVO (carbon-aramid fiber, carbon fiber, glass fiber, organic non-woven fabric, natural linen fiber)

Certifications: DOT