The most reasonably priced component used on the Kl650a17 Klr650 2003 Usa California Canada Cylinder/piston(s) is the Pin,dowel,6.2x8x14.
Parts such as the Cylinder/piston(s): Gasket,cylinder Base (nas), Piston-engine L,o/s, Piston-engine Ll,o/s, Fitting are included in the Kl650a17 Klr650 2003 Usa California Canada Cylinder/piston(s) parts fiche.
With four applications this Nut is the most specified part.