Hellow guys, Welcome to my website, and you are watching Replacing 7 speed freehub body with 8, 9, 10, 11s freehub. 3x7 to 2x9 or 1x11 drivetrain upgrade.. and this vIdeo is uploaded by SickBiker at 2021-11-13T04:00:17-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.