The most reasonably priced component used on the Gs500f 2008 (k8) Usa (e03) Starter Clutch is the Spring.
A sample from the products for the Starter Clutch include: Roller(15x13), Clutch Set, Starter, Bolt(8x16), Pin(7.4x13x56).
The most expensive part in this assembly is the Clutch Set, Starter.