Azonic Outlaw 27.5 XD Driver The Azonic Outlaw XD Freehub Driver is the gadget you need to make your brand new Azonic wheels play nice with a SRAM 11 and 12 speed drivetrains. The drivetrains offer the range of a traditional multi-front ring drivetrain but with the added benefit of simplicity and weight savings. Why not treat that sweet new wheelset to the upgrade it deserves? Features For Azonic Outlaw 27.5" wheels Converts hub to Sram XD 11/12 speed