Mazda MX-5 NC 2.5 — 4-1 45mm Performance Headers

High-flow 4-1 performance headers designed for Mazda MX-5 NC 2.5L Duratec engines. Featuring large 45mm primary runners for improved exhaust flow and enhanced high-RPM breathing.

Product Specifications

• Application: Mazda MX-5 NC 2.5L Duratec
• 4-1 collector design
• 45mm primary runners
• Improved exhaust scavenging
• Optimized for naturally aspirated performance builds

Performance Benefits

The 4-1 design enhances top-end power by reducing backpressure and improving exhaust pulse tuning. Ideal for cammed 2.5 builds, high-rev setups and track-oriented applications. Proper ECU calibration is recommended to maximize gains.

Recommended Upgrades

Stage 2 Camshafts
Custom ECU Calibration
MX-5 2.5 Performance Builds

Availability

Available now for sale.
Contact us for pricing & shipping