The chin bar on the Corsair-X was modified and the area relative to your lips enlarged by 3mm so that you're not kissing the helmet's insides all ride long, while Arai has also made the helmet's interior shape a bit longer, a benefit for long-oval shaped heads. The rest of the changes pertain to the vents, almost all of which have been tweaked. Top diffusers are 20mm longer and straighter for better aerodynamics on the street, Arai claims, plus have a bump at their leading edge for increased velocity (think air speed for air traveling over the top of a plane's wing). On top of that, a new center vent is said to provide 11-percent better airflow, while enclosed side air channels are claimed to reduce wind noise and pull more air and moisture out from behind the visor. Three-position slide switches on each of the front vents enable the helmet to be quieter when closed, plus block water in the event of rainfall. Arai has also incorporated a new F1-style latch mechanism for the shield, which is not a lock, but is said to capture the shield so that it's less likely to open in an impact.