HJC RPHA 1N Red Bull Austin GP Race Helmet Speaker Pockets DOT ECE 2XS-2XL. Designed developed after several years of focused efforts and crucial feedback from top world class athletes in MotoGP. HJC's top engineers went to work and created a race-bred helmet that is truly worthy of top race circuits around the world. The RPHA 1 is the very same model used by HJC's world-class athletes in both MotoGP and WorldSBK, and HJC is set to finally launch it into full production with FIM homologation (FRHPhe-01)-the safety certification. The RPHA 1N is the very same model used by HJC's ...