Re: Quiet exhaust
The idea of the perforated internal tube and the wadding is to let the gasses expand in a controlled manner.
Here is a good video on car exhaust, but principles still the same
https://www.youtube.com/watch?v=1KsZtyFhies
Interesting video on motorbike exhausts
https://www.youtube.com/watch?v=r53UrV7cKp0
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2016 SV650 AL7
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