With a quantity of two pieces, the Seal-oil is the most used part in the GEAR CHANGE MECHANISM diagram.
The most reasonably priced component used on the En650bff Vulcan S Abs 2015 Europe,middle East,africa Gear Change Mechanism is the Circlip-type-c,13mm.
Some items from this specific schematic: Spring,position, Collar, Lever-comp,change Ped, Washer,6x12.8x1.2.