SKUNK2 PRO SERIES INTAKE MANIFOLD BLACK SERIES HONDA K-SERIES FN2 FD2 CL7 TYPE RSkunk2's engineers went back to the drawing board when they set out to improve the already popular '06 '11 Civic Sis RBC intake manifold. Each of Skunk2s Pro Series Intake Manifolds for Hondas K series engines feature larger plenums and shorter, oversized runners when compared to the RBC, and are cast with thicker wall material, leaving room for further porting for high horsepower applications. Instead of producing a manifold with a significantly