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GSC Power Division single beehive valve spring kit is supplied with titanium retainers and chromoly seats for 2013–2015 Scion FR-S and Subaru BRZ models with the FA20 engine. The beehive spring design reduces mass at the retainer while maintaining valvetrain control, and the kit targets FA20 builds where retainers and seats are upgraded. It’s a complete spring kit intended to support stronger spring hardware in those applications.
GSC P-D Single Beehive Spring Kit Titanium Retainers/Chromoly Seats 13-15 Scion FR-S / BRZ FA20
