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GP Sport Parts for the Mazda RX8

GP Sport is a respected Japanese performance brand producing suspension, handling and drivetrain components engineered for drivers who want a genuine upgrade over stock. Their parts suit RX8 owners building a more responsive, composed car without sacrificing everyday usability.

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$ 20 — $ 13000

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GP SPORT Exas High-flow Power Catalyser for Mazda RX8 (Series 1 & 2, 2003-2012)

Swap the restrictive factory cat for a freer-flowing performance catalytic converter that retains emissions equipment across the full 2003-2012 RX8 range.

$1,650 inc GST

What owners are saying

AUTOEXE Motion Control Beam Front and Rear for Mazda RX8 (Series 2, 2009-2012) AUTOEXE Motion Control Beam Front and Rear for Mazda RX8 (Series 2, 2009-2012)

Night and day difference, even on a bone stock suspension. While installing the AutoExe front strut bar greatly enhanced steering response and turn in, the handling improvements from it was very subtle. Likewise with the AutoExe tie bars installed in the front and back of the car. More solid feel, less suspension parts deflection under cornering loads. These Motion Control Beams took away the vibrations that are slightly felt in the steering wheel from small road surface imperfections. It also took away the bumps felt from pavement gaps and mostly the rumble felt from railway crossings and brick roads. Going through small pot holes and road patches, the stock suspension is finally doing its job to dampen away those bumps and doesn't get fully transmitted throughout the entire car. Big bumps, you don't hear a loud hollow "thump" emanating from the back of the car. Just a solid "thud". The car used to understeer and now it hardly does. It handles quite neutral now, even on bone stock open differential, and did I already say bone stock suspension? This is win win, all around, without sacrificing anything.

GENUINE MAZDA OEM Intake Solenoid for Mazda RX8 (Series 1 & 2, 2003-2012) GENUINE MAZDA OEM Intake Solenoid for Mazda RX8 (Series 1 & 2, 2003-2012)

Happy 8's day people! For you series 2 owners, here's the easiest way I found to change these little suckers. RX8 Upgrades providing the genuine goods as always. Remove the air box/ CAI, remove throttle body and remove the top part of the UIM only, this will get you easy access to the solenoids. Now you could remove them from this point, but removing the oil filler neck along with the vacuum chamber the solenoids mount to makes it FAR easier to change them. This whole job can be done in an afternoon for a mechanically minded person. On reassemble, don't forget to place the vacuum reference back onto the bottom of the manifold (has a green check valve) otherwise no valve will work. Reassemble and enjoy. PN is KL01-18-741 for those chasing the part

HKS Hi-Power Cat-Back Exhaust with Titanium Tip for Mazda RX8 (Series 1 & 2, 2003-2012) HKS Hi-Power Cat-Back Exhaust with Titanium Tip for Mazda RX8 (Series 1 & 2, 2003-2012)

I have the HKS Hi power, absolutely love it. It's much lighter than stock. Got a nice low tone at idle, reasonably quiet at 3.5k rpm around town and doesn't drone much on the highway. It's absolutely ignorant when you get to the redline with a satisfying "Pop POP" between gear changes. Has a unique sort of burble when the RPM's are coming back down.. You will love it too:)

Japanese Engineering Focused on Driver Feel

GP Sport has built its reputation in Japan developing performance components. These prioritise real-world driver engagement over pure specification numbers. For the RX8, that philosophy aligns closely with what the platform already does well. The RX8 is a lightweight, naturally balanced sports car. As a result, it rewards precision upgrades over blunt force modifications. The brand’s parts are designed to refine what the engineers intended. They push handling, response and composure further. Moreover, they do so without compromising the character that makes the RX8 worth driving.

What the Brand Brings to the RX8 Platform

The RX8’s chassis is genuinely capable from the factory. However, aged rubber, stock geometry limitations and original suspension valving all leave room for meaningful improvement. GP Sport addresses these areas with components developed and validated in Japan. Because of the demanding roads and a highly informed enthusiast culture, the bar for what a performance part must deliver is set high.

Components for the RX8

  • Suspension and handling components designed to tighten response and reduce unwanted body movement. For example, these suit Australian roads without creating a punishing ride.
  • Geometry and alignment hardware that restores or improves factory-correct settings. This is particularly valuable on cars that have covered significant kilometres and accumulated wear in their suspension points.
  • Drivetrain and chassis parts built to tighter tolerances than OEM replacements. Therefore, they reduce slack and improve the directness of driver inputs from the steering wheel through to the road surface.

Building a More Capable RX8

An upgrade programme for the RX8 is most effective when each part addresses a specific weakness in the stock setup. GP Sport components suit owners who have already sorted the fundamentals: fresh tyres, cooling and reliable ignition. The focus can then shift to sharpening the driving experience itself.

Whether the goal is a more confident back-road companion or a car that holds its line on track, the range is developed to work together as part of a cohesive build. The components are designed to complement each other across suspension and chassis.

Pair them with quality bushings and a proper alignment to get the full benefit of any geometry or suspension work.

Frequently Asked Questions

What types of parts does GP Sport make for the RX8?

GP Sport produces performance-focused aftermarket parts for the RX8, including suspension components, exhaust systems and handling upgrades. The range is aimed at owners looking to improve driving feel and chassis performance rather than purely cosmetic changes.

Is GP Sport a reputable brand for RX8 upgrades?

GP Sport is a Japanese aftermarket manufacturer with a long-standing presence in the tuning market, known for producing parts developed on Japanese roads and circuits. Their components are well regarded among enthusiasts for quality construction and genuine engineering focus.

Are GP Sport parts a direct bolt-on fit for the RX8?

GP Sport parts designed for the RX8 are engineered to fit the specific chassis dimensions and mounting points of the car. As with any aftermarket upgrade, checking that the specific part number matches your Series 1 or Series 2 build is recommended before purchasing.

Do GP Sport suspension or handling parts require professional installation?

Most GP Sport suspension and handling components benefit from professional fitting and a wheel alignment afterwards to ensure the car is set up correctly. Some parts may also require basic mechanical familiarity, so professional installation is the safest approach for owners who are not experienced with suspension work.

Can GP Sport parts be used on a car that is also driven on the street?

Yes, GP Sport parts are generally developed with both street and circuit use in mind, making them a practical choice for owners who want improved performance without sacrificing everyday drivability. Always confirm the specific product's intended use case before fitting.

How does GP Sport compare to fitting generic aftermarket parts on an RX8?

GP Sport components are engineered specifically for defined applications rather than adapted from universal parts, which means fitment, balance and performance characteristics are developed for the intended chassis. This typically results in more predictable handling outcomes compared to generic alternatives.