A front derailleur comprising: a base member structured to be attached to a bicycle frame member; a chain guide operatively connected to the base member; and an actuation mechanism coupled to the base member and to the chain guide for moving the chain guide relative to the base member; wherein the actuation mechanism comprises: a first link pivotably coupled to the base member and to the chain guide; an actuating arm coupled to the first link for attaching a control cable; and a control cable route adjuster provided on the actuating arm for adjusting a route of the control cable, wherein the control cable is a Bowden cable having an inner wire wherein the control cable route adjuster comprises an annular cable attachment portion for attaching said inner wire of said Bowden cable and a cable diverting protrusion extending radially outwardly from the cable attachment portion, wherein a cable engagement location is provided on the cable diverting protrusion when the cable diverting protrusion is in an adjustment position to vary the actuation ratio of front derailleur, and characterized in that an outer surface of a cable diverting portion bends the path of the inner wire when the control cable route adjuster is in the adjustment position, and wherein the control cable route adjuster allows the inner wire to have a straight path when the cable route adjuster is in a rest position, wherein the cable engagement location is disposed at the cable attachment portion when the control cable route adjuster is in the rest position. a base member structured to be attached to a bicycle frame member; a chain guide operatively connected to the base member; and an actuation mechanism coupled to the base member and to the chain guide for moving the chain guide relative to the base member; wherein the actuation mechanism comprises: a first link pivotably coupled to the base member and to the chain guide; an actuating arm coupled to the first link for attaching a control cable; and a control cable route adjuster provided on the actuating arm for adjusting a route of the control cable, wherein the control cable is a Bowden cable having an inner wire wherein the control cable route adjuster comprises an annular cable attachment portion for attaching said inner wire of said Bowden cable and a cable diverting protrusion extending radially outwardly from the cable attachment portion, wherein a cable engagement location is provided on the cable diverting protrusion when the cable diverting protrusion is in an adjustment position to vary the actuation ratio of front derailleur, and characterized in that an outer surface of a cable diverting portion bends the path of the inner wire when the control cable route adjuster is in the adjustment position, and wherein the control cable route adjuster allows the inner wire to have a straight path when the cable route adjuster is in a rest position, wherein the cable engagement location is disposed at the cable attachment portion when the control cable route adjuster is in the rest position. a first link pivotably coupled to the base member and to the chain guide; an actuating arm coupled to the first link for attaching a control cable; and a control cable route adjuster provided on the actuating arm for adjusting a route of the control cable, wherein the control cable is a Bowden cable having an inner wire wherein the control cable route adjuster comprises an annular cable attachment portion for attaching said inner wire of said Bowden cable and a cable diverting protrusion extending radially outwardly from the cable attachment portion, wherein a cable engagement location is provided on the cable diverting protrusion when the cable diverting protrusion is in an adjustment position to vary the actuation ratio of front derailleur, and characterized in that an outer surface of a cable diverting portion bends the path of the inner wire when the control cable route adjuster is in the adjustment position, and wherein the control cable route adjuster allows the inner wire to have a straight path when the cable route adjuster is in a rest position, wherein the cable engagement location is disposed at the cable attachment portion when the control cable route adjuster is in the rest position.