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Discussion Starter · #1 ·
I've been doing a lot of research and got a lot of different answers. Was wondering if someone could clear up the inlet and outlet pipe sizing on my stock exhaust for my 2010 1500 silverado. I'm reading that people are getting 2.75" and 3" right at the weld. Anyone that can clear this up for me would be greatly appreciated. Thanks in advance everyone.

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Your pipe inner diameter is 2.75. Outer diameter of the pipe is 3". That's pry why you're getting different stuff. The true answer is 2.75" inner diameter for your inlet and outlet. (I'm assuming it's a 5.3). If you're ordering pipe pr exhaust system, order 2.75" I.D.
 
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