[pete]

Originally Posted by Traveling Turtle

Hi, Biker Andy!
I have seen that solution made by the japanese on a model you probably know: the GN 250. It showed two pipes coming out of the exaust valves and then became into one before the muffler. Back then I tought it was a two cilinders bike...he,he,he!
Could not be more wrong!

Yamaha XT660R & XT660X have a complete exhaust system
for each exhaust port.... with a link pipe between them...
just a couple of the meany....

Honda XR have been doing it since
1979... pipe for each exhaust port into a single muffer...



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