Skunk2s 70 millimeter Pro Series throttle body for the RSX Type-S and Pro Series intake manifold (part number 307-05-0310) is CNC-machined from forged, billet 6061-T6 aluminum, hard anodized for durability, and is designed to be used with factory intake manifolds as well as Skunk2s Pro Series intake manifolds for bolt-on horsepower and torque gains by optimizing engine airflow.