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HKS RX8 Exhaust - Legamax and SE3P Options for Your Build

HKS RX8 exhaust systems are built for rotary owners who want a proven aftermarket system from one of Japan’s most respected performance brands. Whether you’re researching the Legamax range or tracking down a specific HKS reference for your SE3P, this is your starting point.

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$ 20 — $ 13000

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Mazda RX8 oil additive HKS ADD-II 200ml silver can with black cap

HKS ADD-II Engine Oil Additive 200ml for Mazda RX8 (Series 1 & 2, 2003-2012)

Organic molybdenum treatment that reduces friction and targets dry-start wear in the Renesis rotary. A considered addition to any RX8 oil service.

$45 inc GST

RX8 titanium tip exhaust displayed loose with polished muffler and blue-tinted tailpipe

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

Bolt-on 75mm SUS304 cat-back system with a burnt titanium outlet, freeing rear exhaust flow and giving the Renesis a fuller, crisper rotary note.

$1,900 inc GST

HKS RX8 metal catalyser with polished converter body, heat shield and flanged pipe ends

HKS Metal Catalyzer for Mazda RX8 (Series 1 & 2, 2003-2012)

A 150-cell metallic-core catalytic converter that flows more freely than the factory ceramic unit, sharpening the Renesis exhaust note without decat harshness.

Original price was: $2,600.Current price is: $2,179. inc GST

What owners are saying

KTS Induction Suction Tube for Mazda RX8 (Series 1 & 2, 2003-2012) KTS Induction Suction Tube for Mazda RX8 (Series 1 & 2, 2003-2012)

Trip from Sunshine Coast to Gold Coast was a blast ! Car feels so much better, so much more throttle response, so much cooler. Highly recommend changing Autoexe Type F radiator+KTS Suction Tube+ODULA Ram air 🫶🫶🫶🫶 ARD High speed starter motor makes cold start+hot start lightning fast. Supplied by RX8 Upgrades 🔥🔥

ODULA Ram Air Intake Type RS for Mazda RX8 (Series 1 & 2, 2003-2012) ODULA Ram Air Intake Type RS for Mazda RX8 (Series 1 & 2, 2003-2012)

Trip from Sunshine Coast to Gold Coast was a blast ! Car feels so much better, so much more throttle response, so much cooler. Highly recommend changing Autoexe Type F radiator+KTS Suction Tube+ODULA Ram air 🫶🫶🫶🫶 ARD High speed starter motor makes cold start+hot start lightning fast. Supplied by RX8 Upgrades 🔥🔥

HKS RX8 exhaust systems are built for rotary owners who want a proven aftermarket option from one of Japan’s most respected performance brands. If you’re researching the Legamax range or tracking down a specific HKS reference for your SE3P, this is your starting point.

Why RX8 owners choose HKS

The rotary engine breathes differently to a piston engine. It’s high-revving, sensitive to exhaust backpressure, and rewards a well-matched system more noticeably than many conventional platforms. HKS designs their systems with this in mind. For example, mandrel-bent pipework and tuned outlet sizing work with the 13B-MSP’s exhaust pulse characteristics. Quality stainless construction also contributes to long-term durability.

As a result, the system feels alive climbing toward the redline. In addition, the note suits the engine’s character without becoming intrusive at everyday speeds.

Choosing the right RX8 exhaust from HKS

  • System range: The HKS Legamax is the most searched exhaust system among Australian RX8 buyers. Therefore, check individual listings to confirm current availability.
  • Part reference: If you already have a reference such as HKS 32018-AZ002, use it to match directly to the correct listing. This way you avoid fitment uncertainty.
  • Vehicle code: SE3P references confirm fitment to the RX8 platform. For example, this is useful when cross-referencing HKS’s own catalogue or a Japanese-market listing.
  • Series fitment: Always confirm whether a listing covers Series 1 (2003-2008) or Series 2 (2009-2011). However, exhaust routing and tail trim details can differ between series.

Buying HKS exhaust components in Australia

Sourcing genuine HKS parts in Australia means confirming the correct RX8 exhaust specification for a right-hand-drive SE3P. Left-hand-drive or market-specific variants are not the same fit. However, each listing in this range includes the details you need to make that call. Browse the products below and check the individual fitment notes. Finally, if you’re building around a specific HKS reference, use that part number to go straight to the right listing.

Frequently Asked Questions

What HKS exhaust products are available for the RX8?

The HKS range for the RX8 includes exhaust options from the Legamax series, referenced under the SE3P chassis code. Check each individual listing for current availability, fitment details and part references before ordering.

What is the HKS Legamax exhaust for the RX8?

The HKS Legamax is an aftermarket exhaust range produced by HKS for the RX8 platform. Individual listings carry the specific part references and fitment details you need to confirm compatibility with your car.

Does HKS use the SE3P chassis code when listing RX8 exhaust parts?

Yes. HKS references RX8 exhaust parts under the SE3P chassis designation, which is the factory code for the RX8. Using SE3P alongside the HKS part number is the most reliable way to confirm you are looking at the correct listing.

What is HKS part number 32018-AZ002?

HKS 32018-AZ002 is an exhaust part reference associated with the RX8 range. Check the individual product listing for the full fitment details, specifications and description relevant to that part number.

How do I make sure I order the right HKS exhaust for my RX8?

Use the HKS part number, the exhaust range name such as Legamax, and your vehicle's SE3P reference together when checking listings. Confirm all fitment details directly on the individual product page rather than relying on a broad search term alone.

Is HKS a reputable brand for RX8 exhaust upgrades?

HKS is a well-established Japanese aftermarket manufacturer with a long history in performance exhaust development. Their products are designed to defined specifications and carry traceable part references, which makes it straightforward to confirm exactly what you are ordering for your RX8 build.