Brake device

A brake disc guard is provided inside of a rim of a front wheel and mounted on a knuckle. A caliper is located in a cutout portion formed at a front portion of the brake disc guard. The caliper is supported through a caliper bracket to the knuckle. A large-diameter portion is formed at an upper front end portion of the brake disc guard. The large-diameter portion extends so as to cover the upper side of the caliper bracket and the caliper. A scraper is formed at the front end of the large-diameter portion so as to be bent radially outwardly. The spacing a between the rim and the scraper is set to be the smallest. The dirt deposited on the rim is scraped off by the scraper, so that the dirt separated from the rim is prevented from falling onto the caliper.