Upgrade your 9:ZERO:7 190 hub to a 1x11 drivetrain! The XD driver replaces the free hub body on our 9:ZERO:7 190mm convertioble hub, allowing you to use a 1x11 SRAM cassette. All parts are included to make the swap.
Worked great, easy to install. It would be helpful if you asked whether I had a 12mm TA or 9mm dropout at time of purchase (or include both). It came with 12mm TA adapter, so to go hunt a 9mm adapter down, but luckily Chain Reaction had one lying around. Otherwise no problems. Tim Kirk on 23rd Feb 2016