Campagnolo athena 11 speed front mechthanks to the ultra shift geometry of the cage typical of all the campagnolo 11x groupsets the chain can move between the chainrings with lightening speed and precision in any situation even when chain crossings are extreme or under stress the new athena front derailleur is compatible with both standard and compact cranksets features for double standard and ct crankset max tooth difference 16t max chainring size 54t min chainring size 34t chrome