Skunk2’s Alpha Series Throttle Bodies are designed to be used with factory intake manifolds as well as Skunk2’s Pro Series Intake Manifolds for bolt-on horsepower and torque gains by optimizing engine airflow, all at a competitive price. Skunk2’s Alpha Series Throttle Bodies are precision die-cast from high-quality materials and include features found in our Pro Series line, like countersunk mounting bolts, solid brass throttle plates, and idle adjustment screws for fine tuning. Each Alpha Series Throttle Body features an oversized bore, which results in significant horsepower gains throughout the powerband on naturally aspirated applications and even more on forced induction ones.