Parts such as the Shift Shaft: Spring, Torsion(1fn), Nut(3bm), Bolt(6t5), Spacer (5f7) are included in the Yzf600r 2000 4tv9 England 104tv-300e1 Shift Shaft parts fiche.
The Bolt(6t5) is the lowest priced item on this Shift Shaft schematic.
Check out any of the fourteen Shift Shaft components enlisted.
