The most reasonably priced component used on the Kl250a2 Klr250 1979 Canada Gear Change Mechanism ('78-'79 K is the Bolt 6x20.
A sample from the products for the Gear Change Mechanism ('78-'79 K include: Bolt 6x20, Spring, Coil, Bearing-ball,#6905, Disc, Change Drum.
Of all the components used in this assembly the Drum Assy,gear Shift is the most expensive.