The most reasonably priced component used on the Wr250z 1998 5en1 Italy 285en-100e1b Transmission is the Washer, Plate(59w).
A sample from the products for the Transmission include: Nut (2k7), Gear, 4th Wheel, Gear, 3rd Wheel, Gear, 2nd Wheel.
In this schematic the "Circlip (4l0)" is used most often.