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I was wondering if anybody knew the OEM size of the Pontiac G5 08 exhaust pipe.

I am looking to replace my old one with a new one but not sure what the dimension of the pipe is if anyone knows it would be a big help
 

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Maybe 1¾", no more than 2". resonator and muffler may be found rusted as well. If so, I'd recommend 2.5" diameter pipe, low profile resonator, and Magnaflow dBx muffler. Small performance, GREAT sound under power, nearly quiet at cruise.

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