RCU Forums - View Single Post - Jett Muffler insides

03-02-2016, 06:34 AM

#8

1QwkSport2.5r

Join Date: Oct 2006

Location: Cottage Grove, MN

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I believe, based on the sheet that came with my red Jett .90 muffler, that the tuned range for that one is 12,000-15,000rpm. I'm guessing the larger 1.20 Jettstream muffler is 9,000-11,000rpm? I have the JS-90 pipe.

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