A valve train including a cylinder having a cylinder axis and a cylinder head, the valve train has a first operating mechanism including a cam follower driven by a first valve train cam provided on a cam shaft so as to open and close the first engine valve and a drive mechanism having a drive shaft for moving a supporting position of the cam follower to thereby change a valve operation characteristic of the first engine valve, and a second operating mechanism including a second cam follower driven by a second valve train cam so as to open and close the second engine valve, wherein the drive shaft of the drive mechanism is arranged at a position lower than the cam shaft and between the first and the second engine valve in a reference direction.