Try Googling http://omarsdtr.com/cafe.html
They are in California, I think - or you can also get in touch with Tranzac in Queensland (somewhere in Brisbane). Both these mobs make good 3 into 1 exhausts. I know the Tranzac will improve weight, fuel economy and midrange. I speak from experience as I've owned 2 Waterbottles with Tranzac systems. Original pipes are now almost impossible to source. John Keighley.