A tiltable joint for a luminaire, preferably for an outdoor luminaire, the joint comprising: - a first joint portion comprising a joint member provided with an outer cylindrical surface section having an axis and opposing bearings (112a, 112b) aligned with said axis, said outer cylindrical surface section being provided with a first plurality of interengaging surfaces; - a second joint portion comprising a joint housing provided with a pair of axially-aligned receiving surfaces (212a, 212b), and an inner cylindrical surface provided with a second plurality of interengaging surfaces configured to interengage the first plurality of interengaging surfaces; - wherein the joint member of the first joint portion is configured for being housed within the joint housing of the second joint portion, and the axis of the pair of axially-aligned bearings (112a, 112b) is substantially parallel to the axis of the pair of axially-aligned receiving surfaces (212a, 212b); - a first and second shaft portions (300a, 300b) extending in alignment with the pair of axially-aligned bearings (112a, 112b), such that a pivot axis is defined; - a fixation means configured for: - enabling the engagement of at least a portion of the first plurality of interengaging surfaces with at least a portion of the second plurality of interengaging surfaces; - enabling the release of said engagement such that a rotation movement of the joint housing relative to the joint member is enabled with respect to the pivot axis defined by the first and second shaft portions (300a, 300b); characterized in that the fixation means is further configured for fixing the first and second shaft portions (300a, 300b) to the second joint portion, wherein the first and second shaft portions (300a, 300b) are received by the pair of axially-aligned receiving surfaces (212a, 212b). - a first joint portion comprising a joint member provided with an outer cylindrical surface section having an axis and opposing bearings (112a, 112b) aligned with said axis, said outer cylindrical surface section being provided with a first plurality of interengaging surfaces; - a second joint portion comprising a joint housing provided with a pair of axially-aligned receiving surfaces (212a, 212b), and an inner cylindrical surface provided with a second plurality of interengaging surfaces configured to interengage the first plurality of interengaging surfaces; - wherein the joint member of the first joint portion is configured for being housed within the joint housing of the second joint portion, and the axis of the pair of axially-aligned bearings (112a, 112b) is substantially parallel to the axis of the pair of axially-aligned receiving surfaces (212a, 212b); - a first and second shaft portions (300a, 300b) extending in alignment with the pair of axially-aligned bearings (112a, 112b), such that a pivot axis is defined; - a fixation means configured for: - enabling the engagement of at least a portion of the first plurality of interengaging surfaces with at least a portion of the second plurality of interengaging surfaces; - enabling the release of said engagement such that a rotation movement of the joint housing relative to the joint member is enabled with respect to the pivot axis defined by the first and second shaft portions (300a, 300b); - enabling the engagement of at least a portion of the first plurality of interengaging surfaces with at least a portion of the second plurality of interengaging surfaces; - enabling the release of said engagement such that a rotation movement of the joint housing relative to the joint member is enabled with respect to the pivot axis defined by the first and second shaft portions (300a, 300b);