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RX8 OEM Aftermarket Parts: Upgrades, Replacements and Performance Options

RX8 OEM aftermarket parts are the non-genuine replacements and performance upgrades Mazda RX8 owners reach for when they want reliable, purpose-built alternatives to stock components. Whether you are refreshing a worn component or building toward a specific performance goal, this range gives you considered options across cooling, drivetrain, handling and more.

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$ 20 — $ 13000

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Mazda RX8 clutch kit disc and silver pressure cover on black background

AUTOEXE Sports Clutch Kit for Mazda RX8 (Series 1 & 2, 2003-2012)

Stronger clamping force and an organic friction disc engineered for the Renesis rotary, restoring sharp, positive clutch engagement for spirited street and back-road driving.

$750

Mazda RX8 braided clutch line in labelled clear bag beside Japanese AutoExe instructions

AUTOEXE Braided Sports Clutch Line for Mazda RX8 (Series 1 & 2, 2003-2012)

Stainless mesh PTFE construction eliminates hydraulic expansion for a firmer, more direct clutch pedal feel across every manual gear change.

$170

RX8 accelerator controller harness, black module, switch and APEXi SMART box

APEXi Electronic SMART Accelerator Controller with Harness for Mazda RX8 (Series 1 & 2, 2003-2012)

Sharpen or soften throttle response without touching the ECU. The included plug-and-play harness fits every RX8 model across the full 2003-2012 run.

$110

RX8 one piece brake rotors installed on a red front hub with silver caliper

AUTOEXE Brake Rotors (Sport, 1-Piece) for Mazda RX8 (Series 1 & 2, 2003-2012)

Cast iron sport discs with six slits per side, carbon and silicon content controlled for strength. They are heat-treated to suppress distortion and improve fade and crack resistance over OEM.

$1,050

RX8 SE3P manual flywheel product graphic with AutoExe logo and red RX8

AUTOEXE Sports Flywheel for Mazda RX8 (Series 1 & 2, 2003-2012)

Chromoly flywheel weighing 5.5 kg versus the OEM 7.6 kg, cutting moment of inertia by 28% so the Renesis revs more freely and throttle response sharpens noticeably.

$800

Four red Mazda RX8 ignition leads with black boots arranged on dark surface

AUTOEXE Sports Ignition Leads for Mazda RX8 (Series 1 & 2, 2003-2012)

Stainless steel core construction delivers strong conductance and low electrical noise to every plug, keeping spark quality consistent across the full rev range.

$290

Mazda RX8 strut tower bar shown loose above and fitted in engine bay

AUTOEXE Strut Tower Bar for Mazda RX8 (Series 1 & 2, 2003-2012)

Steel one-piece front brace reduces chassis flex for sharper steering response and a more planted cornering feel across both RX8 series.

$690

Mazda RX8 rear strut brace fitted across luggage bay behind rear seats

CUSCO Strut Brace Type OS (Rear) for Mazda RX8 (Series 1 & 2, 2003-2012)

Bolt-on rear tower brace that ties the chassis together for sharper, more predictable cornering on Series 2 cars.

$300

CUSCO RX8 gearbox oil metal can with 75W-85 front label and white cap

CUSCO Super Sports Gearbox Oil with Neo 2L for Mazda RX8 (Series 1 & 2, 2003-2012)

Fresh 75W-85 manual transmission fluid keeps synchros sharp and shift feel consistent through spirited road use and track days alike.

$120

Two RX8 limited slip differential oil CUSCO 80W-90 tins standing side by side

CUSCO Super Sports LSD Oil with Neo 2L for Mazda RX8 (Series 1 & 2, 2003-2012)

Fresh RX8 limited slip differential oil in the right volume. Suits the OEM Torsen diff and clutch-type LSD upgrades, eliminating chatter and protecting gear sets.

$120

Close-up front label of black Mazda RX8 0W-30 oil metal tin

R-MAGIC Racing Energy Oil for NA Rotary 0W-30 5L for Mazda RX8 (Series 1 & 2, 2003-2012)

Ester-based, near-zero ash 0W-30 rotary engine oil in a 5L pack. It is formulated specifically for the Renesis to protect apex seals from cold start through sustained high-rpm use.

$190

Mazda RX8 pulley kit blue pulleys installed with black belt and alternator

GREDDY TRUST Aluminium Pulley Kit for Mazda RX8 (Series 1, 2003-2008)

Swap the factory cast pulleys for machined duraluminium units. Less rotating mass, freer revving, and a blue engine-bay accent.

$270

Mazda RX8 aluminium radiator close-up showing GReddy tank badge, welded neck and black cooling core

GREDDY TRUST Aluminium Racing Radiator TW-R for Mazda RX8 (Series 1, 2003-2008)

Full-aluminium 40mm core radiator that more than doubles OEM coolant capacity, drops heat by ~35%, and fits the SE3P without modification.

$730

RX8 150A alternator front view showing blue housing, pulley and cooling vents

ARD Advance High-Power 150A Alternator (Blue) for Mazda RX8 (Series 1 & 2, 2003-2012)

Upgrades the RX8 charging system from the factory 90A unit to a rated 150A output. Keeps voltage stable under heavy electrical load with a blue anodised finish.

$780

RX8 aero wiper blades showing black aerodynamic blade sections on grey background

AUTOEXE Aero Sport Wipers and Blade for Mazda RX8 (Series 1 & 2, 2003-2012)

Fin-deflector aero blades suppress wiper lift at speed, keeping rubber flush with the glass for clear, streak-free visibility in wet conditions.

$140

RX8 two-piece brake rotors standing and laid flat with red aluminium hats

AUTOEXE Brake Rotors (Super Sport, 2-Piece) for Mazda RX8 (Series 1 & 2, 2003-2012)

Two-piece rotors cut unsprung mass and manage heat under hard braking. Duralumin bell housing, ventilation fins and cleaning slits suit any RX8 from 2003-2012.

$2,000

Red RX8 SE3P floor brace displayed diagonally with AutoExe logo and red RX8 graphic

AUTOEXE Floor Cross Bar for Mazda RX8 (Series 1 & 2, 2003-2012)

Steel rear-floor cross bar binds the left and right floor sides to reduce cabin flex and sharpen chassis response. Suits all 2003-2012 RX8 models.

$400

Mazda RX8 under spoiler beneath silver front bumper with AutoExe grille badge

AUTOEXE Front Under Spoiler (Piano Black) for Mazda RX8 (Series 2, 2009-2012)

Adds a sharp piano black lower edge to the Series 2 front bumper, lifting the front end’s presence without altering the factory silhouette.

$1,380

RX8 heptagon wheel nut set fitted to silver Mazda alloy wheel with red caps

AUTOEXE Heptagon Wheel Nut Set for Mazda RX8 (Series 1 & 2, 2003-2012)

Seven-sided red lug nuts replace plain stock hardware with a sharp colour accent that sharpens every wheel centre.

$190

RX8 intake suction kit beneath red strut brace beside carbon-fibre airbox

AUTOEXE Intake Suction Kit for Mazda RX8 (Series 1 & 2, 2003-2012)

Multilayer polyester silicone replaces the factory intake hose for noticeably sharper acceleration response and a striking red finish in the engine bay.

$380

What owners are saying

AUTOEXE Sports Steering Wheel (Red Stitch) for Mazda RX8 (Series 2, 2009-2012) AUTOEXE Sports Steering Wheel (Red Stitch) for Mazda RX8 (Series 2, 2009-2012)

I recently installed AutoExe's Sport Steering Wheel on my ND. Taking my time and watching the various video's a few times, it took me a little over an hour, with no real issues, to install the new wheel. I couldn't be much happier with it. The wheel is extremely well made, at least as nice as OEM, with red stitching that matches my SRC paint nicely. It's a tiny bit smaller in diameter than stock, but much thicker, with a mild D shape for additional leg room. For those considering an improved steering wheel, this is a fabulous option in my opinion, particularly if you have red car.

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

AUTOEXE Premium Cat-Back Exhaust Muffler for Mazda RX8 (Series 1 & 2, 2003-2012) AUTOEXE Premium Cat-Back Exhaust Muffler for Mazda RX8 (Series 1 & 2, 2003-2012)

Just installed my spanking new Autoexe Stainless Muffler, and here's a short take of my initial impressions: The Autoexe catback is lovely - very unique 2 box design and the tips are the tapered kind (ie cut at an angle) each lasercut with the Autoexe logo. Very nicely polished midpipe which connects beautifully (and easily) with the exhaust outlet. Most importantly, the exhaust tips have a perfect visual alignment, unlike other exhausts i've seen where one tip protrudes out more than the other. The Autoexe definitely doesn't have this problem. Also, the 2 box design has a lower profile than stock. Previously, i used to scrape and even dent the exhaust box when clearing humps or even parking - not so with the Autoexe. The Autoexe performs really well, at least on my AT. There is a noticable increase in low end torque, and the car just feels substantially lighter. Revs are much more responsive, and the slight lag felt when launching the car seems to have melted away. Linear acceleration is also much faster (at least across 1st 3 gears), and i'm reaching 120-130kmh much faster on 2nd gear alone (NB mine is the 4spd AT). I'm very pleased with the low-torque gains on the Autoexe - finally i have that slight 'lurch' from start which the manuals seem to have, but the ATs don't. The Autoexe starts off idle with a really low, bassy growl. When first installed, it was barely audible, but sounds louder now. In time, the db will increase to an extent. On higher RPM revs, exhaust sounds deep and wet, and def not those shrilly Remus' we hear on the expressways from time to time. Installation was a breeze, and took under an hour at Monster Garage at Ubi, who's the only authorized dealer in Singapore, so these guys know their stuff. The torque/hp improvement was a shocker esp on low end, esp when mine's an AT. I've heard of bros installing Fujitsubos and HKSs that have either no or negative benefit. In this respect, I'm mighty pleased with the Autoexe. Sound is not loud, but a soft low bassy growl when idle, which develops into a mature wet sound at higher revs.

RX8 OEM aftermarket parts are the non-genuine replacements and upgrades built to a documented application, chosen by owners who want a reliable alternative without compromising on fit or purpose. Therefore, consider where each part sits in your build and what standard you want the car to meet.

This collection spans straightforward replacements for worn components through to purposeful upgrades. For example, these improve response, cooling, control and everyday drivability. Every part listed here has a documented application. Also, check individual product compatibility before ordering, particularly if your car has already been modified.

Mazda RX8 aftermarket parts for every stage of ownership

Owners searching for RX8 aftermarket parts Australia-wide will find a specialist catalogue here, not a general-purpose parts site. That distinction matters. For example, the rotary engine has specific demands around cooling, oil management and airflow. A generic catalogue does not account for those demands. Therefore, the options in this range are selected with those requirements in mind.

What this range covers

  • Maintenance and replacement: A new aftermarket component fitted to a known specification is more dependable than a used genuine part. Moreover, an unknown service history adds risk across cooling hoses, filters, sensors and seals.
  • Mazda RX8 upgrade parts: Where a stock component is functional but limiting, an upgrade part helps. For example, it can improve throttle response, reduce heat soak or tighten handling consistency. Therefore, target the area that matters most to how you drive.
  • RX8 performance parts work best as part of a coherent plan. For instance, an intake upgrade pairs naturally with an exhaust improvement. Similarly, a handling change often calls for complementary tyre and alignment work. Think in systems, not individual items.
  • Fitment confidence: Always confirm the stated application and series compatibility before purchase. In addition, fitment details are listed per product and are the reliable reference point.

Aftermarket versus genuine: choosing the right approach

The decision between genuine and aftermarket components is not always straightforward. Genuine Mazda parts remain the factory-correct choice where original calibration and fit are non-negotiable. In addition, for some safety-critical or emissions-related components, that is clearly the right call.

However, for the broader range of RX8 OEM aftermarket parts, a quality aftermarket alternative can match or exceed the original. This applies particularly to performance, cooling, suspension and interior upgrades.

Finally, browse with a clear idea of the job each component needs to do. Select on documented purpose, confirmed fitment and how each part contributes to your build. As a result, the right RX8 OEM aftermarket parts keep your car consistent, whether as reliable daily transport, a refined weekend driver or a car built to perform.

Frequently Asked Questions

What is the difference between genuine Mazda parts and aftermarket parts for the RX8?

Genuine Mazda parts are factory-original components made to the exact specification the car was built with, which matters where precise calibration or OEM fit is critical. Aftermarket parts are non-genuine alternatives that may suit owners seeking a specific replacement solution, a performance upgrade, or a component that better fits their build direction. The right choice depends on the part's role and your priorities for the car.

Are aftermarket parts suitable for a standard RX8 that just needs a repair?

Yes, many aftermarket parts are a practical choice for straightforward repairs or component replacement on an otherwise standard RX8. Choosing a quality new aftermarket part avoids the uncertainty of fitting a used component with an unknown service history. Always check the individual product's stated compatibility before ordering.

How do I know if an aftermarket part will fit my RX8?

Check the fitment and compatibility information listed on each individual product page before purchasing. The RX8 was produced in two series with some differences between them, so confirming your car's series and build details is important. If you are unsure, the product description will specify which variants or model years the part suits.

Can aftermarket parts be used as part of a performance build on an RX8?

Aftermarket parts are commonly used in performance-focused RX8 builds to refine specific areas such as response, cooling, control or power delivery. The key is selecting components that work together as part of a considered plan rather than fitting them in isolation. Review each part's intended application and how it interacts with the rest of your setup.

Is it safe to use aftermarket parts on a rotary engine like the RX8?

Rotary engines have specific operating characteristics that make part selection particularly important, and quality aftermarket components from reputable manufacturers are widely used on RX8s without issue. The critical step is ensuring the part is appropriate for its intended application and compatible with your car's current state of tune or modification. Always review individual product specifications and, where relevant, consult a specialist familiar with rotary engines.

Do aftermarket parts void my RX8's warranty?

Warranty implications depend on the age of your vehicle, the nature of the warranty in question, and Australian consumer law as it applies to your situation. Most RX8s in circulation are well beyond their original manufacturer warranty period. For any vehicle still under a dealer or extended warranty, it is worth confirming with that provider before fitting non-genuine components.

Are RX8 aftermarket parts available for both Series 1 and Series 2 models?

Availability varies by part and category. Some aftermarket components are compatible across both RX8 series, while others are specific to Series 1 or Series 2 due to differences in engine management, body panels or other specifications. Each product listing will state which series or model years it suits, so always verify fitment before ordering.