You can also buy a Greve from Germany.
Super Pipe. Half the price of the Hatori, very light, worked superb on my 1.40 and the build quality is just beautfull.
I'd say better than the Hatori!
He's a very famous muffler/pipe producer here in Europe.
the pipe fits the hatori flex header joiner perfectly.
If you're using anu other header, say with a teflon pipe coupler, ask him to supply your pipe with a thicker mouth pipe.
Saves you no end of hardship mating the small Hatori with the gapping Teflon!