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GSC Power Division single-spring valve spring kit for 2012 and later Subaru BRZ and Scion FR-S models, featuring chromoly seats and titanium retainers. This valve train kit supplies components intended for upgraded spring and retainer interaction in high-revving engines, offered as a direct-fit kit for BRZ/FR-S applications where durable spring seats and lightweight retainers are desired.
GSC P-D 12+ Subaru BRZ / Scion FR-S Single Spring Chromoly Seat and Titanium Retainer Kit
