07 - 10 MAZDA 3 - 2.0 Header + Catalytic 2013

07 - 10 MAZDA 3 - 2.0 Header + Catalytic 2013 - . 07 - 10 MAZDA 3 - 2.0 Header + Catalytic

Exhaust Headers, catalytic converter

The Thunder MAZDA 3 - 2.0 Exhaust Header has been designed to improve exhaust flow leaving the cylinder head with fewer restrictions.

This 4-2-1 exhaust header achieves this better flow by increasing the size of the header piping and removing the power-robbing catalytic converter. This increased flowing ability results in more horsepower and torque that the engine can produce. Throttle response is also improved at all RPM ranges.

Each header is made from high quality stainless steel and is mandrel bent to reduce exhaust obstruction. The MAZDA 3 - 2.0 Exhaust Header bolts perfectly to the cylinder head using existing hardware and includes bungs for existing OEM sensors. The exhaust header will bolt to your existing factory exhaust or other aftermarket exhaust system for an OEM-like fitment.

  • All the connections between tubes and the flange are welded both on the interior and exterior to prevent breakage.
  • 10mm-thick chrome-plated black iron flange.
  • 2mm-thick SUS304 surface-polished stainless steel tube (42mm dia.).
  • 2mm-thick SUS304 stamped and surface-polished stainless steel tube connector.
  • With spring and a bowl-shaped washer.
  • 10mm-thick chrome-plated black iron flange.
  • 2mm-thick SUS304 surface-polished stainless steel tube (50.8mm dia.).
  • Two-layer stainless steel flexible tube (50.8mm dia.).
Thunder's SUS304 stainless steel manifolds are low-noise and sturdy. With 2mm-thick tubes, unique in-house design, and HKS Dynojet horsepower test certification, we guarantee the superior quality of our manifolds and their extended operation lives!
  • Stainless steel assembled manifolds: Durable and rustproof.
  • Stainless steel exhaust pipes: Easily welded, sturdy.
  • Thick stainless steel tubes: low-noise and with longer operation life.
Fuse welding is better than pulse welding:
Standard pulse welding simply welds manifold pipes together. But the weakness is that the pipes become thinner after welding, with structural changes and a shorter operation life. However, welding with the addition of fusible material the same as that of the pipes does not compromise pipe-wall thickness, but rather strengthens and extends durability.


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