The lowest price component in this Valve parts-list fiche is the Nut, Hexagon.
eleven components are shown in this Xvs1100a 2005 5ysf Portugal 1d5ys-300e1 Valve exploded diagram.
A sample from the products for the Valve include: Valve, Intake, Seal, Valve Stem Oil, Arm, Valve Rocker, Screw, Valve Adjusting.