Quote:
Originally Posted by CCCLXXZ
Can you PPPPPPLEASE measure the inner diameter of the stock cat flange on the y-pipe side. I have asked many but to no avail I am still searching for the answer. MM or inches would be great!!!
Nick
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I don't have my stock cats here, but I do have the stock Y-pipe here. My calipers show 42.5mm ID on the Y-pipe flanges on the side where they mate with the stock cats, I would hope/assume the cats are the same.