On this parts fiche the Bolt,socket,6x16 is the most specified component.
A sample from the products for the Exhaust Valve include: Cap,check Window, Bolt,flange,6x16, Plate Comp.,cable, Oil Seal 9x18x7.
The Nsr125r 1999 (x) France / Cmf Exhaust Valve consists of eighteen pieces with the Base,cable Guide being the most expensive.