The most reasonably priced component used on the Gs500f 2004 (k4) Usa (e03) Rear Swinging Arm (not For U.s. Market) is the Washer.
The Rear Swinging Arm (not For U.s. Market) is made up of components including this Swinging Arm which is the most expensive.
With two applications this Bearing(22x29x30) is the most specified part.