Campagnolo Chorus Shift Lever Set - 12-SpeedCampagnolo Chorus Shift Lever Set 12 Speed. Chorus 12 Speed Shift LeverUltra Shift mechanism controls the 12 speed rear derailleur letting the rider shift up by up to 3 sprockets and down by up to 5 sprockets in a single movement Campagnolos one lever one action philosophy ensures no confusion control regardless of the cycling conditions or the cyclists position The various positions possible for Ergopower controls mean they adapt better to different