Check out any of the twenty-six Rear Master Cylinder components enlisted.
The Bolt, Flange(2vm) is the cheapest item from this partsfiche.
Parts such as the Rear Master Cylinder: Holder, Brake Hose 1, Diaphragm, Reserver, Hose, Reservoir, Holder, Reserve Tank are included in the Tzr125 1992 4cl2 Europe 223pb-300e1 Rear Master Cylinder parts fiche.