What is a "Big Bike" in the Philippines

It would help the reader to understand the situation regarding "Big Bikes" as any bike over 400cc is called here. These bike are mainly grey imports, as there was no real market for them until well into the 2010's.Well there are no dealers who will work on an older bike, no spares, not rescue services, nothing. When something goes wrong you are on your own unless you can find an experienced mechanic. More of that later!( The situation is getting a little better now owing to the increase in dealerships but it is still nothing like the situation is in the West)