On this parts fiche the Roller,4x8 is the most specified component.
Of all the components that make up this Gear Change Drum/shift Fork(s) the Bolt,socket,6x16 has the lowest price.
A sample from the products for the Gear Change Drum/shift Fork(s) include: Bolt,flanged,6x18, Bolt,socket,6x12, Rod-shift,input, Plate-position.