GSC Power-Division Super Alloy Single Exhaust Valve-29mm (STD) (gsc2065-01) 2543 When it comes to a

When it comes to a high performance vehicle like the Porsche Carrera 991

Bolts on after the OEM catalytic converter equipped headers

Magnum Force Stage 2 Cold Air Intake System Cover (54-12868-C) by aFe

increased compression

GSC Power-Division Super Alloy Single Exhaust Valve-29mm (STD) (gsc2065-01) 2543 When it comes to aWhen 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 software, 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 distortion at the