The component with the lowest price in the FRAME (MODEL K2/K3/K4/K5/K6) schematic is the Nut.
The Shim(8x12x1) is the most widely applied product in the RM250Z 2005 (K5) USA (E03) FRAME (MODEL K2/K3/K4/K5/K6) ( four times ).
Some items from this specific schematic: Rail,seat, Frame(gray), Roller,chain, Bolt(8x100).