Pit Crew Racing | NB8C Hand-Bent Exhaust Manifold for Mazda MX-5 Miata NB
This hand-bent exhaust manifold from Pit Crew Racing is designed specifically for the NB8C Mazda MX-5 Miata, focusing on maximizing performance through careful design and extensive testing. Pit Crew Racing favors a 4-1 header configuration for its ability to deliver stronger peak power compared to traditional 4-2-1 layouts.
Through repeated testing, the optimal runner length was determined to be 650mm to the collector (pyramid top), with equal length applied to all cylinders. This setup helps maintain smooth exhaust pulse flow while supporting strong high-RPM performance and balanced torque characteristics.
To further improve exhaust efficiency, each pipe is carefully hand-bent, allowing for a smoother and more precise pipe layout that promotes consistent exhaust flow.
Specifications
- Designed for Mazda MX-5 Miata NB (NB8C)
- Performance-focused 4-1 exhaust manifold design
- Equal runner length 650mm to collector
- Hand-bent piping for smooth exhaust flow
- Pipe diameter: 42.7Φ runners / 50Φ outlet
- Engineered to enhance both torque characteristics and peak power
