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Vance & Hines makes an after muffler baffle for Harleys: Pro Pipe Lowend Power Baffle. Part number V21299 and is available at Harley dealers.
There are two models, the above having a solid end cap in the center tube and the other model having a 1/2", + or -, hole in the endcap for less restriction.
The baffle will not fit inside the 3" exhaust pipe as is since the mounting rings are 4", but can be machined to fit in the exhaust pipe just before the turn out. The turn out would need to be cut out ,baffle fitted, and then rewelded.
Appears the baffle uses the same approach as Car Chemistry discs
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2014 Porsche Cayman S, 2014 M-B CLA 45 AMG,
Unkown:"Their sweet lines all but take my breath away, and I desire them as much for their beauty as for their use "
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