GSC P-D Polished Intake Valve - 29mm Head (STD) - (SET 8) 2013 Scion FR-S / Subaru BRZ vendor_Magnaflow Performance the FW-037-AL is a popular

the FW-037-AL is a popular upgrade for Civic Si

Part #: SU303

31mm +1mm oversized head diameter for improved exhaust flow

Our complete in-house machine shop performs all necessary machine shop operations to precise tolerances (no hacker work here) to maximize turbocharger efficiencies and provide our customers with the best possible product and customer service

GSC P-D Polished Intake Valve - 29mm Head (STD) - (SET 8) 2013 Scion FR-S / Subaru BRZ vendor_Magnaflow Performance the FW-037-AL is a popularPart #: 2122 8 When creating our new valve line we set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used we have less valve