The RPHA 91 represents HJC's latest iteration in modular touring helmets, meticulously crafted to deliver unparalleled all-day comfort. Its innovative Premium Integrated Matrix EVO shell (P.I.M. EVO) has been strategically engineered to offer elevated levels of shock resistance, all while maintaining a lightweight profile through the incorporation of advanced reinforcement materials such as carbon-aramid, carbon fiber, glass fiber, organic non-woven fabric, and natural linen fiber. The HJ-37 face shield and HJ-V17 sun visor offer a distortion-free, panoramic view. The refined chin bar locking system ensures seamless engagement and reduced cheek pressure. The 3D-engineered low-noise interior diminishes road noise, while the EPS design accommodates eyewear. The RPHA 91 is also equipped with second-generation Smart HJC Bluetooth systems, underscoring its advanced connectivity.