2g DSM "stepped" hub with 69.1mm inboard portion & 67.1mm outboard portion EVO 8-9 "stepped" hub "stepped" protrusion with 69.1mm hubcentric ring in place (marked in yellow) "unstepped" protrusion with 67.1mm protrusion all the way through "unstepped" protrusion with 67.1mm hubcentric ring in place (marked in yellow)