GSC Power-Division 21-4N Single Intake Valve +1mm Over (gsc2052-01) 1821 Owners of these trucks would

Owners of these trucks would begin noticing loss of power caused by cracks in the plastic pipe

Snow Performance Hemi 6

Mitsubishi 2008-2017 Lancer 2

For Bosch LSU 4

GSC Power-Division 21-4N Single Intake Valve +1mm Over (gsc2052-01) 1821 Owners of these trucks wouldWhen 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