Shimano brake adaptorthe shimano brake adaptor is ideal for mounting a 180mm disc brake rotor to your bikes standard 160mm is caliper brake mount.
Suited to mounting a post mount disc brake caliper to your bikes is caliper mount when using a 180mm disc brake rotor.
Features: genuine shimano spare parts 160mm is mount to 180mm post mount adaptor part number: ksmmar180psabuy shimano components from chain reaction cycles, the worlds largest online bike store.