The component with the lowest price in the HANDEBAR / TOP BRIDGE schematic is the Nut,cap,7mm.
A sample from the products for the Handebar / Top Bridge include: Bolt,flange,7x57, Guide A Brk Cable, Bolt,flange,7x54, Holder,b2 Handle.
The thirteen Xr250 1980 (a) Usa Handebar / Top Bridge component parts are all listed in this schematic.