RPHA 12N Full-Face Helmet. The HJC RPHA 12N Helmet offers top-tier performance with a sleek, aerodynamic design that reduces air drag and noise. Featuring a HJ-42 curved shield and ratchet for enhanced visibility and an advanced ventilation system with four intakes and three exhausts for optimal airflow, this helmet ensures comfort in any riding condition. Its fully removable interior and interchangeable cheek pads provide a customizable fit, while the emergency pull tab adds extra safety. Approved to DOT FMVSS No. 218 and ECE 22.06 standards, the RPHA 12N combines lightweight construction, superior aerodynamics, and reliable protection for both street and track riders. Premium integrated Matrix EVO (PIM™ EVO). Optimized aerodynamic performance: reduced lift and drag for enhanced stability. Optimized rear spoiler. Aerodynamic focused shell shape. HJ-42 curved shield and ratchet reduces air drag and noise.