The most reasonably priced component used on the Sr400 2016 2rdb Europe 1r2rd-300e1 16 Shift Cam & Fork is the Screw, Flat Head.
Some items from this specific schematic: Circlip (150), Plate, Side, Plate Stopper Set, Bar, Shift Fork Guide 2.
The most expensive part in this assembly is the Shift Cam Assy.
