The Optional is made up of components including this Paint (marble Parsec Blue) which is the most expensive.
Parts such as the Optional: Thread Lock Super(1360), Paint (marble European Blue), Grease,pbc For Brk Pad 20g, Thread Lock No.1401 Clear 200g are included in the Gsxr750r 1989 (k) (e01 E02 E04 E22) Optional parts fiche.