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Author Topic: 660 muffler pipe ?  (Read 505 times)

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Offline mdavlee .

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Re: 660 muffler pipe ?
« on: January 03, 2018, 07:02:18 pm »
The more pipe that goes inside the shell the quieter it gets. I use 1" on 70cc huskies. I would think that and the 3/8" might be enough for a 660
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