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GSC Power Division +1mm intake valve for Subaru/Scion BRZ and FR‑S (FA20): a chrome‑polished intake valve with a 36.0mm head, sold as a single unit. Intended as a replacement or upgrade when larger intake valve sizing is needed during FA20 cylinder head work, this +1mm valve matches the stated dimension for BRZ and FR‑S valvetrain configurations.
GSC P-D Subaru/Scion BRZ/FR-S FA20 21-4N Chrome Polished Intake Valve - 36mm Head (+1mm) - Single
