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GSC Stainless Steel Exhast Valves STD Size - 04+ STI / 02-14 WRX

When creating their new valve line they set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs they have created a stronger and higher flowing valve head design. They flow test prototype valve heads in the specific applications to make sure they have the highest flowing valve head available on the market today. With the materials used they have less valve distortion at the face than any of the teste. . . Show More >



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