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HKS Metal Catalyzer for Mazda RX8 (Series 1, 2003-2008)

Free up exhaust flow with a high-flow metal catalytic converter that reduces backpressure, sharpens throttle response, and supports future tuning without harsh drone.

$2,600

The HKS Metal Catalyzer enhances exhaust efficiency for the Mazda RX8 Series 1 (2003–2008) with a high-flow, heat-resistant metallic core that reduces restriction while maintaining emissions compliance. The result is smoother, more responsive power delivery across the rev range.

  • Features a high-capacity metallic substrate for superb heat resistance and longevity
  • Reduces exhaust backpressure for faster throttle response and improved mid-range pull
  • Direct bolt-on fitment for straightforward installation
  • Pairs exceptionally well with the GREDDY TRUST GT Slash Exhaust
  • Withstands high thermal cycles thanks to robust construction

You will experience a smoother, freer-revving engine character with improved drivability and a more responsive feel.

For an optimised setup, consider combining with the AUTOEXE Ram Air Intake or the KTS Induction Tube.

Additional information

RX8 Model

SKU HK-MCZ-S1 Category Types , Brand:

Related RX8 Upgrades

This high-flow metal catalyzer is one of the best Mazda RX-8 upgrades you can make to your Series 1 (2003-2008). High-flow catalytic converter are among the top Aftermarket mods you can buy from HKS for owners who want better performance and reliability from their RX8. If you are looking for metal high-flow cat for sale in Brisbane (QLD), Sydney (NSW), Melbourne (VIC), Canberra (ACT), Adelaide (SA), Darwin (NT) or Perth (WA), you’ll find high-quality Japanese Exhaust upgrades at RX8 Upgrades.