GREDDY TRUST RX8 GT Slash Exhaust - Japanese Performance Exhaust Systems

GREDDY TRUST has been a fixture in the Japanese performance exhaust market for decades. As a result, the RX8 GT Slash exhaust line reflects that heritage directly. Designed and manufactured in Japan, these systems are engineered to free up the rotary’s exhaust flow. They sharpen the character of the 13B-MSP in a way the OEM system simply cannot match.

The GT Slash silencer profile is a recognisable signature across GREDDY TRUST’s catalogue. Moreover, it blends purposeful road presence with a refined exhaust note that suits daily driving, without the anti-social drone of a straight pipe.

Why a GREDDY TRUST exhaust suits the rotary

The Renesis rotary engine revs freely. Because of this, it rewards an exhaust system that keeps pace from the mid-range to the redline. A GT Slash system is built with that characteristic in mind. For example, mandrel-bent pipework and precision-formed sections maintain consistent gas velocity across the rev range.

The result is an exhaust that feels alive as the engine climbs toward its limit. The note sharpens as revs build rather than sitting at a flat, droning pitch. Compared with the heavy, restrictive OEM rear section, the weight saving and improved flow are immediately apparent.

Buying a GREDDY RX8 exhaust in Australia

For owners searching for a RX8 GT Slash exhaust in Australia, confirming a few key details before purchasing is worthwhile. This exhaust range has been produced across different configurations, so review the product listing carefully to ensure you select the right sections and hardware for your RX8.

RX8 GT Slash exhaust buying checklist

• First, confirm the listed fitment covers your specific RX8 application, noting Series 1 and Series 2 differences where relevant.
• Also, review exactly which sections are included, cat-back, axle-back or a full system, and whether hardware and gaskets are supplied.
• Meanwhile, consider the intended use of the car. The GT Slash note suits spirited road driving and owners who want presence without going full race.
• Finally, check that supporting components such as the mid-pipe, cat and hangers are in acceptable condition before fitting a new rear section.

GT Slash as part of a staged exhaust build

Owners building their RX8 progressively often start with the GT Slash cat-back section. The mid-pipe, high-flow cat or headers can then be addressed in a later stage.

Freeing the exhaust path naturally encourages owners to address fuelling and intake to match. Review the full range of exhaust and induction products on site to plan a build where each part reinforces the next. For further background on the brand’s engineering approach and current catalogue, the official GREDDY TRUST website is a useful reference.