CNC Cut Billet aluminum Throttle Body Housing, 64mm Single Blade. Pro Series Throttle Bodies feature a large, 64mm bore, which results in significant horsepower gains throughout the power band on heavily modified.
The Throttle Body Pro Serie 2.5, a 64mm part, is perfect for modifying 1.8L Mazda Miata MX-5 engines, specifically those with the BP-4W and BP-Z3 air-fuel sensors.