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The GSC Power Division single-conical valve spring kit for Porsche GT3 (991) applications includes single-conical valve springs with titanium retainers and steel spring seats. Offered as a focused valvetrain assembly, this kit provides a direct-replacement spring and retainer package for 991 GT3 cylinder heads, supplying the intended retainment and seat hardware for service or upgrade.
GSC P-D Porsche GT3/GT3 (991) Single Conical Valve Spring Ti Retainer Steel Spring Seat Kit
