Our Monoblade throttle bodies start out as a solid block of 6061 T6 heat treated aluminum (not a casting). They feature a re-designed throttle linkage cam for better throttle control and feel. They also sport a black oxide finished turned, ground and polished throttle shaft supported by sealed ball bearings for a super long lifespan, and CNC machined throttle blades (not stamped like others) for a clean fit. Bodies are anodized 'Carbon Black' for a long lasting finish. A billet IAC housing, TPiS ID plate, and gaskets are included. All parts are manufactured by TPiS in the U.S.A. This throttle body flows nearly 1250cfm and are great for "Max Effort" engines making in excess of 540-550 HP.