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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
Fitment note: BRZ models use in 3 locations only (RH/LH Intake
Cylinder Bore Sizes = 86
High seat pressure valve springs required
Crosstrek MY18-22
GSC Single Valve Spring and Ti Retainer Set FA EJ20X Fitment note: BRZ models useKEEP YOUR VALVES UNDER CONTROL GSC's singe cylindrical valve spring kit is their entry level performance valve spring option at an economical cost. The lower open pressure is ideal for milder cam options and or less extreme rpm conditions.. Upgraded valve springs are essential for controlling valve movement with more aggressive cam profiles. A higher spring rate is also necessary under high boost conditions due to the manifold pressures acting against
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