Hayes 180mm Disc Brake Bracket Hayes Disc Brake Adaptors are the finest disc brake adaptors available for Hayes disc brakes. Achieve your proper brake alignment and optimum function. This adaptor is for mounting a standard Post Mount caliper to a Post Mount fork to use a 180mm disc brake rotor. Use all Hayes brake components for the best braking performance. Please note: This adaptor is designed for the 160mm native post mount standard. Some newer forks are 180mm native and do not require this adaptor to use a 180mm rotor. Please check your fork before ordering. Features Post Mount Standard For use with 180mm disc rotor Ideal use with Hayes Disc Brake Caliper | Hayes | 180Mm Disc Brake Bracket Post Mount