GREDDY TRUST Comfort Sports GT Slash Exhaust System for Mazda RX8 (Series 1 & 2, 2003-2012)

Upgrade to a performance cat-back system that delivers a deeper tone, smoother flow, and improved top-end power while remaining civilised for daily use.

$1,800

The GREDDY TRUST GT Slash Exhaust System gives the Mazda RX8 Series 1 & 2 (2003–2012) a deeper, smoother tone while improving exhaust flow for enhanced performance. It delivers a refined, drone-free sound that complements daily driving and spirited use alike.

  • Produces a clean, resonant exhaust note with no harshness
  • Improves flow characteristics for better high-rpm performance
  • Mandrel-bent piping maintains consistent internal diameter
  • Pairs exceptionally well with the HKS Metal Catalyzer
  • Built with durable, heat-resistant materials for long-term reliability

You will notice a stronger upper-range pull, smoother power delivery and a richer, more premium exhaust tone.

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

Additional information

RX8 Model

,

SKU GT-EXT-S1S2 Category Types , Brand:

Related RX8 Upgrades

$600

Enhance cabin feel with a red-stitched sports wheel that tightens steering response, improves grip, and refreshes a tired interior without sacrificing comfort on longer drives.

$600

Bundle your intake upgrades into one kit for better flow, cooler charge air, and crisper throttle response, simplifying the path to a stronger, more responsive engine.

Price range: $90 through $390 inc GST

Swap the restrictive manifold for a tubular stainless header that improves exhaust scavenging, sound quality, and top-end power potential.

$1,400

Replace the rear silencer with a freer-flowing tail section that improves tone, reduces restriction, and maintains comfortable cruising manners.

$1,650

Improve cold starts and reliability with a higher-torque starter motor that cranks faster, reducing stress on the battery and making life easier in cold weather.

$390