The Yamaha OPTIONAL PARTS GAUGES & COMPONENT PARTS 1 has thirty-five products enlisted in the schematic.
The most expensive part in this assembly is the Digital Meter Assy(tacho).
A sample from the products for the Optional Parts Gauges & Component Parts 1 include: Water Pressure Meter Assy, Nut, Hexagon (663), Bulb (t6.5, 12v-1.7w), Display Unit.