TAKE LIFE BY THE HANDLEBARSThese geniuine Shimano brake adaptors are for adapting post mount calipers to IS mount forks and frames, for use with 180mm rotors. Choose Front for a front IS mount fork, and Rear for a frame with IS tabs. Constructed of aluminum, these adaptors are designed to deliver optimum performance with Shimano brand disc brakes. These adaptors are supplied with mounting hardware to mount the adaptor to the frame or fork. FEATURESGenuine Shimano brake adaptors for use with Shimano disc brake systemsCaliper Type: 74mm post-mountMount Type: 51mm IS (International Standard) forks or framesIncludes mounting hardware