Valvetronic Exhausts Australia for the Toyota A90 Supra

The Valvetronic Designs valved exhaust for the Toyota GR Supra A90/A91 lets you switch between a raw, aggressive tone and a quiet cruise at the push of a button. Titanium, brushed steel and gold options explained.

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Valvetronic Titanium Exhaust System for the Toyota GR Supra A90/A91

Upgrade your Toyota GR Supra A90/A91 (B58) with the Valvetronic Designs valved exhaust system. Designed for drivers who want aggressive performance sound and refined sound control in one system, it suits street performance, weekend drives and daily driving.

Valvetronic Designs logo

Introduction

The Valvetronic Designs exhaust is engineered for the Toyota GR Supra A90/A91 with the B58 engine. The titanium version is built from lightweight titanium with precision TIG welds, and the system is also available in brushed stainless steel and gold finishes.

In valves-open mode, exhaust gases flow through mandrel-bent piping with minimal restriction, delivering a raw, race-inspired sound. At the push of a button, vacuum-actuated valves divert gases through a quad-chambered muffler, reducing the sound output for a quieter, more refined tone – ideal for daily driving and early starts.

How Valvetronic Technology Works

The system lets you switch between two distinct sound profiles at the touch of a button:

Aggressive Mode

  • Race-Inspired Sound: With the valves open, the system delivers a deep, aggressive tone.
  • Maximum Flow: Mandrel-bent piping keeps restriction low for better exhaust gas flow.
  • Weekend and Track Days: Brings out the full character of the B58.

Quiet Mode

  • Refined Sound Control: With the valves closed, gases pass through a quad-chambered muffler, significantly reducing sound levels.
  • Neighbour-Friendly: Better for cold starts, city streets and late-night drives.
  • Everyday Usability: A good balance between performance sound and daily comfort.

Why it matters for Australian Supras

Many Australian owners find the factory exhaust valves stay open regardless of drive mode. With the Valvetronic system you control the valves yourself, so you can close them for a quiet start or cruise and open them when you want the full sound.

Engineering and Materials

Titanium Construction

  • Lightweight: The titanium system is approximately 25 lbs (11 kg) lighter than the factory exhaust. The stainless steel versions save approximately 11.1 lbs (5 kg).
  • Durability: Titanium is strong and highly resistant to corrosion.
  • Precision TIG Welds: Clean, race-inspired welds throughout.

Mandrel-Bent Piping

  • Optimised Flow: Smooth mandrel bends minimise turbulence.
  • Reduced Back Pressure: Freer flow helps the B58 breathe more easily.

Quad-Chambered Muffler

  • Sound Control: Reduces sound output when the valves are closed.
  • Balanced Tone: Smooth sound without unwanted rasp.

Aesthetics and Fitment

  • Premium Tips: 5" tips finished to complement the Supra's rear bumper.
  • Vehicle-Specific Fitment: Engineered for the Toyota GR Supra A90/A91 (B58).
  • 100% Reversible: Bolt-on design, so you can return to the stock exhaust at any time.
  • Professional Installation Recommended: The valve system needs to be connected and set up correctly. We install at our Melbourne workshop – see exhaust installation.

Vehicle Fitment for Australian Models

  • Compatible Models: Toyota GR Supra A90/A91 (MK5), 2020+
  • Engine: 3.0L B58, GT and GTS 250kW variants
  • Right-Hand Drive (RHD): Compatible with Australian-market vehicles

Frequently Asked Questions (FAQs)

What vehicles are compatible?

The Toyota GR Supra A90/A91 (MK5) with the 3.0L B58 engine, including GT and GTS 250kW variants, 2020 onwards, RHD.

How does the Valvetronic technology work?

Vacuum-actuated valves switch between an aggressive, race-inspired exhaust note and a quiet, refined tone. With the valves open, gases flow through the mandrel-bent piping with minimal restriction. With the valves closed, they are diverted through a quad-chambered muffler to reduce sound output.

Is the installation reversible?

Yes. It is a bolt-on system and fully reversible to the stock exhaust.

Is it road legal in Australia?

Noise and modification rules vary by state, and the result depends on your car and setup. Before fitting any aftermarket exhaust to a registered road car, check the rules in your state.

Which finish should I choose?

Titanium is the lightest and most premium option. Brushed steel is the most affordable, and gold gives a bold, standout look.

Versions and Prices

The Valvetronic Designs GR Supra exhaust is available in three finishes (prices in AUD, correct at the time of writing – see the product page for current pricing):

  • Brushed Steel – $4,400
  • Gold – $4,650
  • Titanium – $7,400

Shop the Valvetronic Designs exhaust for GR Supra →

Conclusion

The Valvetronic Designs exhaust gives the GR Supra an aggressive, race-inspired sound when you want it and a quiet, refined tone when you don't – all at the touch of a button. For more options, compare every system in our GR Supra exhausts collection, read our best GR Supra exhaust guide, or see Valvetronic Designs vs Fi Exhaust.

Valvetronic Designs titanium exhaust on a Toyota GR Supra MK5

With the release of the GR Supra in 2020, we witnessed the culmination of a two-decade-long anticipation. The GR Supra also referred to as the MK5, underwent a remarkable transformation, blending its iconic JDM heritage with contemporary design elements, including contributions from the renowned BMW Z4 platform. While some may perceive this collaboration as a departure from tradition, it's undeniably a testament to the enduring allure of the Supra lineage, echoing the legendary 2JZ engine resonating through to the B58.

Behind the wheel of the GR Supra becomes the focal point of admiration, drawing fellow enthusiasts and eliciting spontaneous snapshots from passing people. My own journey into automotive culture was shaped by the vibrant scene of the 90s, particularly growing up in Melbourne, where car salons and cultural exhibitions brought JDM customization to life, from slammed suspensions, to under glow lights, supercharged turbos adorning from the streets to showroom exhibition floors.

Amidst the rapid evolution of the Australian automotive landscape, I recognized an opportunity to cultivate the car community around the modification and enhancement of the GR Supra. This endeavor is dedicated to providing a specialized platform centralised enabling high quality products sourced into Australia for car enthusiasts like myself on the limitations of the GR Supra (Unlike US and Japan).

While the Australian market for car modifications may be comparatively modest in scale compared to regions like Asia, USA, or Japan, our aspiration is to create this community from an inclusive space where like-minded individuals can access products, meet, share insights from a the collective experience of automotive enthusiasts across the nation- and hopefully one day globally.

Join Sequential Racing Australia as we embark on this journey, celebrating the legacy of the supra and championing the spirit within Australia's dynamic car modification community forging connections through our shared passion for automotive culture.

Thank You
From All of Sequential Racing Team

Written By:  Phil L | 989.Supra (Director & Founder)