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CZP XT eXtra Thick Header to Catalytic Gasket VQ35HR VQ37VHR - Nissan 350Z, 370Z / Infiniti G35, G37, Q50, Q60

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Question:

How large in diameter is the middle? I have 2.5 inch pipes, would this block any part of the flow area? - Chris

Answer:

Hey Chris, inner diameter is 64mm or 2.52in.

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