In this schematic the "Shoe,rr.brake (mca)" is used most often.
This schematic depicts all components used in the Cr250r Elsinore 1984 (e) Canada / Cmf Rear Brake Panel (1) partslist.
A sample from the products for the Rear Brake Panel (1) include: Panel,rr*nh-105*, Nut,flange,18mm, Dust Seal,brk.cam, Shoe,rr.brake (mca).