Specific freehub body compatible with the sram xx1 drivetrain this new freehub body can be easily installed on all crossmax and deemax wheels 2012 and after to convert them to the new xd standard by sram making the wheel compatible with the xx1 drivetrain features material alloy compatibility crossmax and deemax wheels 2012 and after for sram xd cassettes only content freehub body lip seal xx1 specific locknuts