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The Supertech intake valve for Nissan GT‑R VR38DETT engines is a nitrided, undercut racing intake valve specified with a 5.9mm tip. Finished with a black nitrided surface, it is intended as a direct replacement or upgrade for VR38DETT intake ports when building a competition or high‑duty valvetrain, preserving valve geometry while offering the nitrided treatment noted in the product description.
Supertech Nissan GTR VR38DETT Black Nitrided Undercut Intake Racing Valve - 5.9mm Tip
