Ventura County BMW in Newbury Park has been good for parts and accessories tho expensive. They have a good reputation for service and support. George is the man to see there if you want to purchase a bike.
"Run don't Walk" away from West Valley Cycles in the San Fernando Valley. The crazy woman who runs the place will tell you "she doesn't want you for a customer" if you try to negotiate a deal or question her products (I'm talking from experience).
"If we can manage to convince the Chinese that Jihadists' testicles are aphrodisiacs, within ten years they'll have disappeared..."