Skunk2 06-11 DBW Throttle Body Adapter for Ultra-Series Race ManifoldSkunk2's all new DBW throttle body adapter now offers 06 11 Honda Civic Si enthusiasts even more flexibility. Manufactured out of 6061 T6 billet aluminum, 06 11 Honda Civic Si throttle bodys can be bolted onto the new Ultra Race Series intake manifold. Enthusiasts now have a few options for throttle bodies. Each unique, CNC machined and hard anodized throttle body adapter features 74mm opening, recessed holes for easy adaptation, and all necessary