The component with the lowest price in the SWING ARM/CHAIN CASE schematic is the Screw,4x8.
The Screw,4x8 is the most widely applied product in the NSR125R 1999 (X) ENGLAND SWING ARM/CHAIN CASE ( four times ).
Some items from this specific schematic: Bush,pivot Thrust, Bolt,fr.disk Cove, Slider,chain, Bearing,needle.