PISTON FOR AN INTERNAL COMBUSTION ENGINE

A piston for an internal combustion engine is provided with a top portion (2) substantially circular from which outer perimeter protrudes a side portion (3) comprising at least a first segment (3') positioned on the portion of the piston that undergoes a greater radial compressive stress (TS) and at least a second segment (3") located in the opposite portion of the piston which undergoes a lower stress radial compression (ATS), the piston further comprising a substantially cylindrical portion which defines a radial bore (4) positioned substantially parallel, and in the lower portion relative to the head portion (2) for positioning a piston/rod pin and at least two first structural walls (5') making the connection between the first segment of the side portion (3') with the portion which defines the radial bore (4) and at least two second structural walls (5') making the connection between the second side segment (3") with the portion which defines the radial bore (4), wherein the first structural walls (5') are substantially divergent toward the substantially cylindrical portion which defines the radial bore (4) and the second structural walls (5") are substantially convergent toward the substantially cylindrical portion which defines the radial bore (4).