Racing 64mm Throttle Body for 1994 -1997 Mazda MX-5 Miata 1.8L BP-ZE Description: Throttle Bodies feature a large, 64mm bore, which results in significant horsepower gains throughout the powerband on heavily modified, naturally aspirated applications and even more on forced induction ones. Designed to be used with the OEM intake manifold Horsepower and torque gains by maximizing engine airflow. CNC machined billet 6061-T6 aluminum. Also compatible with OEM throttle cables, which simplifies installation. Also features sealed bearings for smooth operation and ultra-strong, upgraded shafts for ultimate durability. All necessary hardware and a new throttle body gasket are included for trouble-free installation.