Brian Crower Valves Subaru WRX 02-14/STI 04-21
GSC Power-Division Viton Valve Stem Seals Subaru WRX 02-14/STI 04-21/Forester XT 04-13/Legacy GT 05-12
Tomei Race Spec +1mm Intake/Exhaust Valve Set Subaru WRX 02-14/STI 04-21