The GSC P-D titanium valve spring retainer for BRZ/FRS FA20 engines is supplied as a single retainer and is part of kit GSC P-D5056. Made for FA20 applications, this titanium retainer serves as a direct replacement component within that kit structure, allowing builders to source an individual retainer for valvetrain service or upgrade projects where the full kit is used.
GSC P-D BRZ/FRS FA20 Titanium Retainer (Part of Kit GSC P-D5056) - SINGLE