GSC Power-Division Exhaust Valve Guide Set (gsc3083-8) 2 Fits all Porsche 997 Twin

Fits all Porsche 997 Twin Turbo 3

Mount the winglets on the car in the matte black or choose the unpainted option and color match to your paint scheme

a special resin mix is applied beneath a clear coat that maintains excellent transparency without chips or flakes

8:1 to 18:1 AFR

This product fits Chevy 2005-2007 Cobalt SS 2

GSC Power-Division Exhaust Valve Guide Set (gsc3083-8) 2 Fits all Porsche 997 TwinWhen 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