Pro Series Intake Manifold K20Z3 Honda Civic Si Acura TSX K24A2 TB Throttle Body
Our 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 our Pro Series Intake Manifolds for Honda’s K-series engines features larger plenums and shorter, oversized runners when compared to the RBC, and is 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 and top-end power gains.
Our all-new, cast-aluminum Pro Series Intake Manifolds for Honda’s K-series engines are a direct-fit replacement for all '06-'11 Civic Si engines thanks to their unique design and throttle body flanges, which are compatible with OEM throttle bodies as well as those as large as 76mm. Pro Series manifolds also incorporate an angled-runner design, which allows for ample hood clearance on almost any engine combination.
Pro Series Intake Manifolds offer horsepower and torque gain greater than the popular RBC manifold but without compromising mid-range power output. The design incorporates runners that are similar in length to the RBC but with larger bores, a special tapered design, as well as a larger, tapered plenum that together preserves mid-range power but increases and accelerates airflow to allow for significant top-end power gains. Pro Series Intake Manifold runner exits are also machined and hand-finished to best match the cylinder head’s ports. The Pro Series Intake Manifold’s shape and design also increase wave scavenging effects at the engine’s ideal operating range, which allows for a broad increase in usable power.
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