With a quantity of four pieces, the Dust Seal,13x18x3 is the most used part in the SWINGARM/CHAIN CASE diagram.
This schematic depicts all components used in the Vfr750r Rc30 1989 (k) Australia Swingarm/chain Case partslist.
Of all the components that make up this Swingarm/chain Case the Screw,flat,5x12 has the lowest price.