A vehicle brake disk is disclosed that can include an outer friction member having a first thickness in cross-section, and an inner friction member having a second thickness in cross-section that is thicker than the first thickness in cross-section of the outer friction member. A plurality of vanes can connect the outer friction member to the inner friction member, and a connection cylinder portion can connect the outer friction member to a hub member for connection to a wheel of the vehicle. The vanes can be configured to have different lengths. The vanes can alternate in length about the periphery of the brake disk, with a uniform location of the end portions at an outer periphery of the brake disk and alternating locations of other end portions at an inner periphery of the brake disk.