The lowest price component in this Cylinder Head parts-list fiche is the Gasket(6.2x13x1.2) (nas).
The Bolt(6x40) is the most widely applied product in the GSXR750 2009 (K9) USA (E03) CYLINDER HEAD ( twenty times ).
The Cylinder Head is made up of components including this Head Assy,cylinder which is the most expensive.