Patent ID: 8430215

Claim:
A disk brake system for a saddle-type vehicle, said disk brake system formed from a single metal plate member and comprising an outer brake disk provided for a front wheel of the vehicle, and an inner brake disk provided for a rear wheel of the vehicle; wherein: the outer brake disk comprises: an annular disk portion for being sandwiched by brake pads, and an attaching portion provided in such a manner as to project to the inner side in a diametrical direction of the disk portion; the inner brake disk comprises: a disk portion having a wave-shaped outer periphery for being sandwiched by brake pads, and a plurality of inwardly projecting attaching portions formed integrally with, and provided on the inner side in a diametrical direction with respect to the disk portion; a maximum outer diameter of the wave-shaped outer periphery of the inner brake disk is greater than a minimum inner diameter of the outer brake disk, where said minimum inner diameter is defined by a circle intersecting a plurality of tip ends of the inwardly projecting attaching portions of the outer brake disk; and a minimum outer diameter of the wave-shaped outer periphery of the inner brake disk is substantially equal to said minimum inner diameter of the outer brake disk.