A constant velocity joint comprising: an outer joint part with a longitudinal axis and outer ball tracks, wherein the outer joint part comprises an attachment side and an aperture side; an inner joint part with a longitudinal axis and inner ball tracks; wherein the outer ball tracks and the inner ball tracks form pairs of tracks (22, 23); a torque transmitting ball in each pair of tracks (22, 23); a ball cage arranged between the outer joint part and the inner joint part and comprising circumferentially distributed cage windows each of which receiving at least one of the torque transmitting balls; wherein the ball cage holds the balls in a joint central plane, when the inner joint part is arranged coaxially relative to the outer joint part, and wherein the longitudinal axis of the outer joint part and the longitudinal axis of the inner joint part form a joint articulation plane, when the inner joint part is articulated relative to the outer joint part by an articulation angle (β) which deviates from 0°; wherein in each angular position of the constant velocity joint an opening angle (δ) is formed between an outer tangent to the outer ball track and an inner tangent (T') to the inner ball track, if viewed in the joint articulation plane, wherein said outer tangent extends through an outer contact point between the ball and the outer ball track and wherein said inner tangent (T') extends through an inner contact point between the ball and the inner ball track; characterised in that at least one of the pairs of tracks is designed such that - for at least one joint articulation angle (β) within a small articulation angle range which comprises the joint central plane, the opening angle (δ) amounts to zero (δ=0°) and - for at least one joint articulation angle (β) within a large articulation angle range which comprises joint articulation angles (β) which are larger than a maximum joint articulation angle (β) of the small articulation angle range, an aperture-side opening angle (δ) of a ball moving in the joint articulation plane towards the aperture side of the outer joint part and an attachment-side opening angle (δ) of a ball moving in the joint articulation plane towards the attachment side of the outer joint part are unequal zero and open in the same axial direction. an outer joint part with a longitudinal axis and outer ball tracks, wherein the outer joint part comprises an attachment side and an aperture side; an inner joint part with a longitudinal axis and inner ball tracks; wherein the outer ball tracks and the inner ball tracks form pairs of tracks (22, 23); a torque transmitting ball in each pair of tracks (22, 23); a ball cage arranged between the outer joint part and the inner joint part and comprising circumferentially distributed cage windows each of which receiving at least one of the torque transmitting balls; wherein the ball cage holds the balls in a joint central plane, when the inner joint part is arranged coaxially relative to the outer joint part, and wherein the longitudinal axis of the outer joint part and the longitudinal axis of the inner joint part form a joint articulation plane, when the inner joint part is articulated relative to the outer joint part by an articulation angle (β) which deviates from 0°; wherein in each angular position of the constant velocity joint an opening angle (δ) is formed between an outer tangent to the outer ball track and an inner tangent (T') to the inner ball track, if viewed in the joint articulation plane, wherein said outer tangent extends through an outer contact point between the ball and the outer ball track and wherein said inner tangent (T') extends through an inner contact point between the ball and the inner ball track; characterised in that at least one of the pairs of tracks is designed such that - for at least one joint articulation angle (β) within a small articulation angle range which comprises the joint central plane, the opening angle (δ) amounts to zero (δ=0°) and - for at least one joint articulation angle (β) within a large articulation angle range which comprises joint articulation angles (β) which are larger than a maximum joint articulation angle (β) of the small articulation angle range, an aperture-side opening angle (δ) of a ball moving in the joint articulation plane towards the aperture side of the outer joint part and an attachment-side opening angle (δ) of a ball moving in the joint articulation plane towards the attachment side of the outer joint part are unequal zero and open in the same axial direction. - for at least one joint articulation angle (β) within a small articulation angle range which comprises the joint central plane, the opening angle (δ) amounts to zero (δ=0°) and - for at least one joint articulation angle (β) within a large articulation angle range which comprises joint articulation angles (β) which are larger than a maximum joint articulation angle (β) of the small articulation angle range, an aperture-side opening angle (δ) of a ball moving in the joint articulation plane towards the aperture side of the outer joint part and an attachment-side opening angle (δ) of a ball moving in the joint articulation plane towards the attachment side of the outer joint part are unequal zero and open in the same axial direction.