Skunk2 Pro Series K20Z3 Intake Manifold

Improves Upon the Trusted RBC Intake Manifold Design Larger Bore Runners for Improved Airflow Direct Replacement for 06-11 Civic Si Angled Runner Design for Ample Hood Clearance Description Vehicle Fitment Included Skunk2's engineers went back to the drawing board when they set out to improve the already popular '06-'11 Civic Si’s RBC intake manifold. Each of Skunk2’s Pro Series Intake Manifolds for Honda’s 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 oversized plenum and excessively short runners that would sacrifice mid-range power, Pro Series manifolds were designed for the “street enthusiast” who wants more power but doesn’t want to sacrifice mid-range performance to get it. The results are improved airflow, an enhanced venturi effect, and both mid-range a