Hi Kato if you're still out there, can you give me /us a bit more on the "collector outlet sizing" bit?! Generally you seem to be strongly confirming my original scepticism about going as far as 50mm for primaries on a road bike, any comments on the fact that I am planning on using twin silencers, 45mm ID basically mufflers with a reverse cone exiting via a slash cut 50mm pipe Bitza.
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Bitza
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