This company advertises components that could be used for a custom exhaust:
Springs, clamps, etc. http://www.coneeng.com/pdf/Motorcycle Webpage 11_1_10.pdf
2-1 collectors http://www.coneeng.com/pdf/3-1 & 2-1 Collector PDF.pdf
Springs, clamps, etc. http://www.coneeng.com/pdf/Motorcycle Webpage 11_1_10.pdf
2-1 collectors http://www.coneeng.com/pdf/3-1 & 2-1 Collector PDF.pdf