Extreme PSI
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Engine
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Cylinder Heads and Valvetrain
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Valves
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Ferrea 6000 Series Exhaust Valves (Standard Size): Subaru EJ20/EJ25 WRX 2002-2014, STI 2004-2016
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ACT SALE! 30% OFF MSRP ON ALL ADVANCED CLUTCH PRODUCTS WHILE SUPPLIES LAST!