View Full Version : stock exhaust size
04-18-2008, 09:32 PM
Just seeing if anyone knows the stock exhaust size on a NBS of the top of their head, its a little late to go out and measure mine.
04-19-2008, 03:01 PM
bump...i have tried to search on here and still no luck..
04-19-2008, 05:16 PM
The y-pipe is 2.5 and after the cat/muffler joint, it becomes a 3 inch diameter as it goes into the muffler. I believe after the muffler it gets reduced back to the 2.5 inch size. I am not 100% on the after muffler size, but the other parts I am certain of.
04-19-2008, 08:10 PM
the stock pipe on my 04 is 2.75 in/out of the the muffler.
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