The bar-end electric actuation device of a bicycle gearshift, comprising a body suitable for being mounted at an end of handlebars facing forwards in the direction of travel (X) of the bicycle and a first and a second electric actuation member acting on respective electrical contacts which are mounted in the body and are suitable for controlling gearshifting, upwards and downwards respectively. The first and the second electric actuation member are faced by said body according to a respective facing direction, angularly spaced apart by an angle (α) that is between 60° and 130°. Moreover, the body is suitable for being positioned externally around the end of the handlebars, leaving free access to the inside of the end itself.