Hello Sammy,
In Thailand it should not be a problem to get stuff for your Honda Air Blade, maybe the best thing to do is to go to the nearest book and magazine shop and look inside a few of this Thai magazines (they normally fun with advertising for "local" motorcycles)
One slide warning is that there are currently two Honda Air Blade's the first and older is with a carburettor and the second and the newest is with PGM-FI (Honda's Fuel Injection System), if you buy a upgrade or bore-up you need to tell for which model it is. (obvious some kits will not work on a PGM-FI model and some PGM-FI mods will not work on a carburettor Air Blade. (even something simple as a exhaust pipe can cause problems)