The most reasonably priced component used on the Tt125r Tt125rc 2000 (y) Usa California Shift Cam. Fork is the Pin,dowel (603).
On this parts fiche the Pin,dowel (603) is the most specified component.
A sample from the products for the Shift Cam. Fork include: Bar, Shift Fork Guide 1, Shift Cam Assy, Fork, Shift 3, Bar, Shift Fork Guid 2.