Motorbike lamp for realising at least one lighting function, the motorbike lamp comprising - a housing with a light emission opening, - a holding element fixed to the housing for fixing the motorbike lamp to a motorbike, - at least one light source arranged in the housing, and - a primary optics made of a solid transparent material arranged between the at least one light source and the light emission opening, wherein the at least one light source comprises an LED and is arranged and aligned in the housing in such a way that it emits light in a main radiation direction running through the light emission opening, and wherein the primary optics close the light emission opening and deflect and shape the light emitted by the at least one light source to produce a light distribution corresponding to a lighting function realised by the motorbike lamp, wherein a light emitting surface of the primary optics, viewed in a horizontal plane which passes through the light source or one of the light sources, comprises the main radiation direction of the light source and, when the motorbike lamp is mounted to the motorbike, is oriented perpendicular to a vertical longitudinal plane of the motorbike, the longitudinal plane of the motorbike passing through wheels of the motorbike and perpendicular to the axes of rotation of the wheels, has a first convex curvature, and has a second convex curvature when viewed in a vertical plane passing through the light source or one of the light sources, comprising the main radiation direction of the light source and being oriented parallel to the longitudinal plane of the motorbike, characterised in that the second convex curvature in the vertical plane is less than the first convex curvature in the horizontal plane. - a housing with a light emission opening, - a holding element fixed to the housing for fixing the motorbike lamp to a motorbike, - at least one light source arranged in the housing, and - a primary optics made of a solid transparent material arranged between the at least one light source and the light emission opening, wherein the at least one light source comprises an LED and is arranged and aligned in the housing in such a way that it emits light in a main radiation direction running through the light emission opening, and wherein the primary optics close the light emission opening and deflect and shape the light emitted by the at least one light source to produce a light distribution corresponding to a lighting function realised by the motorbike lamp, wherein a light emitting surface of the primary optics, viewed in a horizontal plane which passes through the light source or one of the light sources, comprises the main radiation direction of the light source and, when the motorbike lamp is mounted to the motorbike, is oriented perpendicular to a vertical longitudinal plane of the motorbike, the longitudinal plane of the motorbike passing through wheels of the motorbike and perpendicular to the axes of rotation of the wheels, has a first convex curvature, and has a second convex curvature when viewed in a vertical plane passing through the light source or one of the light sources, comprising the main radiation direction of the light source and being oriented parallel to the longitudinal plane of the motorbike, characterised in that the second convex curvature in the vertical plane is less than the first convex curvature in the horizontal plane. wherein the at least one light source comprises an LED and is arranged and aligned in the housing in such a way that it emits light in a main radiation direction running through the light emission opening, and wherein the primary optics close the light emission opening and deflect and shape the light emitted by the at least one light source to produce a light distribution corresponding to a lighting function realised by the motorbike lamp, wherein a light emitting surface of the primary optics, viewed in a horizontal plane which passes through the light source or one of the light sources, comprises the main radiation direction of the light source and, when the motorbike lamp is mounted to the motorbike, is oriented perpendicular to a vertical longitudinal plane of the motorbike, the longitudinal plane of the motorbike passing through wheels of the motorbike and perpendicular to the axes of rotation of the wheels, has a first convex curvature, and has a second convex curvature when viewed in a vertical plane passing through the light source or one of the light sources, comprising the main radiation direction of the light source and being oriented parallel to the longitudinal plane of the motorbike, characterised in that the second convex curvature in the vertical plane is less than the first convex curvature in the horizontal plane.