A method for manufacturing an implantable lead includes forming an elongated lead body core that defines a longitudinal axis. The elongated lead body core has a plurality of axially extending channels that are circumferentially spaced apart from one another around the elongated lead body core. The method also includes positioning an electrode ring around the elongated lead body core and electrical conductors. The method includes positioning a respective electrical conductor in each of the axially extending channels and positioning a dielectric insulator ring around the elongated lead body core and electrical conductors.