Parts such as the E-21 Transmission: Washer,thrust,45, Gear M-2.3 (24-28, Cir Clip,extl25mm, Ring B,set are included in the Gl1100 1981 (b) Canada E-21 Transmission parts fiche.
The most reasonably priced component used on the Gl1100 1981 (b) Canada E-21 Transmission is the Screw, Flat, 6x20.
The thirty-nine Gl1100 1981 (b) Canada E-21 Transmission component parts are all listed in this schematic.