The most reasonably priced component used on the Gs850g (e01 E02 E04 E17 E18 E21 E22 E24 E25 E26 E34 E39 Crankcase Cover is the Pin.
A sample from the products for the Crankcase Cover include: Gasket,clutch Cover (mca), Screw (6x35), Gasket,contact Breaker Cover (nas), Cover,sprocket.
The Crankcase Cover is made up of components including this Cover which is the most expensive.