Engineered in collaboration with MotoGP and WorldSBK professionals, the HJC RPHA 1N Gerloff MC-21 is a FIM Racing Homologated track helmet designed for high-performance competition. The protective structure utilizes a PIM+ (Premium Integrated Matrix Plus) shell reinforced with carbon, carbon-glass hybrid, and aramid fibers to deliver advanced impact resistance. This construction meets rigorous safety standards, holding FIM, Snell M2020D, and DOT FMVSS 218 certifications for verified on-track reliability.
The interior features Silvercool advanced antibacterial moisture-wicking fabric to manage heat and humidity during extended sessions. Aerodynamic efficiency is managed by the Advanced Channeling Ventilation System (ACS), which incorporates five intake vents and four exhaust vents for optimized airflow. Visibility and security are ensured by the HJ-35 pinlock-ready racing shield, equipped with tear-off posts and a dual-locking system for secure retention.
Manufacturer Spotlight:HJC Helmets(Est. 1971, Seoul, South Korea)
#1 in the World — Over 50 years of specialized motorcycle helmet manufacturing.