A clutch collar comprising: an outer surface that extends around an axis; an inner surface that is disposed opposite the outer surface; a clutch collar face gear that has a first tooth that extends from the inner surface to the outer surface, and a second tooth disposed adjacent to the first tooth, wherein the first tooth includes: a first flank that is continuously curved in a direction that extends from the inner surface to the outer surface; and a second flank that is disposed opposite the first flank and is continuously curved in the direction that extends from the inner surface to the outer surface, and an annular groove that is spaced apart from the clutch collar face gear and extends from the outer surface toward the axis, wherein the first tooth has a dovetail profile in which the first flank and the second flank become progressively further apart in an axial direction that extends away from the annular groove, characterized in that a root surface extends from the first tooth to the second tooth and from the inner surface to the outer surface, wherein the root surface is nonplanar and is disposed further from a normal plane where the first flank of the first tooth meets the outer surface (point B) than where a second flank of the second tooth meets the outer surface (point D); wherein the normal plane is disposed perpendicular to the axis and extends through the annular groove. an outer surface that extends around an axis; an inner surface that is disposed opposite the outer surface; a clutch collar face gear that has a first tooth that extends from the inner surface to the outer surface, and a second tooth disposed adjacent to the first tooth, wherein the first tooth includes: a first flank that is continuously curved in a direction that extends from the inner surface to the outer surface; and a second flank that is disposed opposite the first flank and is continuously curved in the direction that extends from the inner surface to the outer surface, and an annular groove that is spaced apart from the clutch collar face gear and extends from the outer surface toward the axis, wherein the first tooth has a dovetail profile in which the first flank and the second flank become progressively further apart in an axial direction that extends away from the annular groove, characterized in that a root surface extends from the first tooth to the second tooth and from the inner surface to the outer surface, wherein the root surface is nonplanar and is disposed further from a normal plane where the first flank of the first tooth meets the outer surface (point B) than where a second flank of the second tooth meets the outer surface (point D); wherein the normal plane is disposed perpendicular to the axis and extends through the annular groove. a first flank that is continuously curved in a direction that extends from the inner surface to the outer surface; and a second flank that is disposed opposite the first flank and is continuously curved in the direction that extends from the inner surface to the outer surface, and an annular groove that is spaced apart from the clutch collar face gear and extends from the outer surface toward the axis, wherein the first tooth has a dovetail profile in which the first flank and the second flank become progressively further apart in an axial direction that extends away from the annular groove, characterized in that a root surface extends from the first tooth to the second tooth and from the inner surface to the outer surface, wherein the root surface is nonplanar and is disposed further from a normal plane where the first flank of the first tooth meets the outer surface (point B) than where a second flank of the second tooth meets the outer surface (point D); wherein the normal plane is disposed perpendicular to the axis and extends through the annular groove.