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I bought a eBay knockoff of Flowmaster's American Thunder dual kit and this is the muffler that came with it (which I did not use). Supposed to be equivalent to a 40 series. 3" center in, 2.5" dual out, 16" long OAL (it's a shorty muffler). I believe it has the standard 5" x 10" body. 409 stainless instead of aluminized. Might make a great muffler for a side exhaust due to the short length.
11-05-2018, 08:33 AM
3" in/dual 2.5" out 2-chamber muffler
