HJC RPHA 1N HelmetHJC RPHA 1N Helmet The HJC RPHA 1N is pure race DNA. Developed with direct input from MotoGP and WorldSBK athletes, this is the exact helmet worn by HJCs top pros on the worlds fastest circuits. Built to meet FIM racing homologation standards, its engineered for maximum protection, razor sharp aerodynamics, and uncompromising performance at high speed. From its lightweight Premium Integrated Matrix Plus shell to its advanced ventilation and dual lock