The title compound, C₂₆H₄₈N₄Si₃, was synthesized by the reaction of 2,2-dichlorotrisilane with 3,5-bis(dimethylamino)phenyllithium. In the molecule, the dihedral angle between the benzene rings is 57.57 (7)° and the Si—Si—Si bond angle is 110.08 (2)°. In the crystal, molecules are linked <italic>via</italic> an SiC–H...π(aryl) interaction, forming a chain along the <italic>c-</italic>axis direction.