RM FD3S Big Throttle Processing

Car Make: Mazda
Model: RX-7 FD3S

The bore (inner diameter) and butterfly diameter have been increased by 4 mm.
This will improve the response the moment you step on the accelerator.

In addition, the intake resistance at full throttle is reduced, and the maximum torque and horsepower are improved by increasing the amount of intake air.
Since it will be processed with genuine throttle, please ship it to us in advance.