Ventilated braking band for ventilated brake disc defining an axial direction (A-A), coinciding with the axis of rotation of the ventilated brake disc, a radial direction (R-R), orthogonal to the axial direction (A-A), and a tangential or circumferential direction (C-C), orthogonal to both the axial direction (A-A), and the radial direction (R-R); - said ventilated braking band comprises a first plate and a second plate, coaxial to the same axial direction (A-A); - said first plate and said second plate are mutually spaced apart in the axial direction (A-A) so as to delimit a gap therebetween; wherein - said first plate comprises a first braking surface, adapted to face at least a first brake pad of a brake caliper which can be associated with said ventilated braking band; and wherein - said first plate comprises at least a first inner surface, facing said second plate, and wherein said first inner surface is substantially parallel to said first braking surface;and wherein - said second plate comprises a second braking surface, parallel and opposed to said first braking surface, so as to be adapted to face at least a second brake pad, opposite to said first brake pad of said brake caliper which can be associated with said ventilated braking band; and wherein - said second plate comprises a second inner surface, facing said first plate, and wherein said second inner surface is substantially parallel to said second braking surface;and wherein - said ventilated braking band comprises connecting elements extending in an axial direction (A-A) between said first inner surface and said second inner surface, connecting together said first plate and said second plate; and wherein - said ventilated braking band comprises protrusions projecting from a plate (2, 3) in said gap, without reaching the faced plate (3,2); and wherein - each of said protrusions connects together at least two separate connecting elements;and wherein - some of said protrusions, projecting in the gap from one of said first or second plate (2, 3), form a protrusion group; and wherein - said protrusion group form a continuous or interrupted protrusion group path, developing from the proximity of the radially inner edge to the proximity of the radially outer edge of the plate (2, 3); and wherein - said protrusion group projects from both plates (2, 3) forming at least a first and a second protrusion group path (106, 107); characterised in that the projections of said first and second protrusion group (106, 107) in a plane parallel to the first or second braking surface (5, 6) cross each other, creating a tortuous path for the ventilation air. - said ventilated braking band comprises a first plate and a second plate, coaxial to the same axial direction (A-A); - said first plate and said second plate are mutually spaced apart in the axial direction (A-A) so as to delimit a gap therebetween; wherein - said first plate comprises a first braking surface, adapted to face at least a first brake pad of a brake caliper which can be associated with said ventilated braking band; and wherein - said first plate comprises at least a first inner surface, facing said second plate, and wherein said first inner surface is substantially parallel to said first braking surface;and wherein - said second plate comprises a second braking surface, parallel and opposed to said first braking surface, so as to be adapted to face at least a second brake pad, opposite to said first brake pad of said brake caliper which can be associated with said ventilated braking band; and wherein - said second plate comprises a second inner surface, facing said first plate, and wherein said second inner surface is substantially parallel to said second braking surface;and wherein - said ventilated braking band comprises connecting elements extending in an axial direction (A-A) between said first inner surface and said second inner surface, connecting together said first plate and said second plate; and wherein - said ventilated braking band comprises protrusions projecting from a plate (2, 3) in said gap, without reaching the faced plate (3,2); and wherein - each of said protrusions connects together at least two separate connecting elements;and wherein - some of said protrusions, projecting in the gap from one of said first or second plate (2, 3), form a protrusion group; and wherein - said protrusion group form a continuous or interrupted protrusion group path, developing from the proximity of the radially inner edge to the proximity of the radially outer edge of the plate (2, 3); and wherein - said protrusion group projects from both plates (2, 3) forming at least a first and a second protrusion group path (106, 107); characterised in that the projections of said first and second protrusion group (106, 107) in a plane parallel to the first or second braking surface (5, 6) cross each other, creating a tortuous path for the ventilation air.