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

CUSCO Type OS rear brace supports Series 2 rear towers, reducing chassis flex for steadier suspension response through loaded corners.

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

$300

RX8 rear strut brace from CUSCO reinforces the Series 2 rear suspension towers. This Type OS rear brace suits drivers refining rear chassis support. It helps the suspension respond more consistently through loaded corners and direction changes. The bolt-on design supports a focused chassis upgrade without body modification.

RX8 Rear Strut Brace Features

  • The oval-section aluminium bar provides rigid rear support without excessive weight.
  • Rear tower reinforcement helps reduce chassis flex when cornering loads build.
  • More consistent suspension geometry supports a predictable rear response through bends and transitions.
  • Factory mounting points make this CUSCO Type OS rear brace direct bolt-on, with no body modification required.
  • The CUSCO blue end plates provide a purposeful visible finish in the rear cabin area.

For RX8 enthusiasts, this rear tower bar can make the chassis feel more settled in loaded bends. Clearer feedback from the rear structure helps drivers better read how the car responds. It retains the RX8’s character while supporting a handling-focused build. It is suited to a staged chassis refresh, where each change has a clear role. The rear-cabin placement keeps the brace visible as part of the finished presentation.

Pair this RX8 rear strut brace with the CUSCO Strut Brace Type OS (Front) to reinforce both ends of the chassis. The BLITZ ZZ-R Coilover Suspension is a relevant next step for owners refining suspension control. View the manufacturer’s range at the CUSCO official website.

Additional information

RX8 Model

SKU CU-RSB-S1S2 Category Types , Brand:

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This ram air intake system is one of the best Mazda RX-8 upgrades you can make to your Series 2 (2009-2012). Ram air intake upgrades are among the top Aftermarket mods you can buy from CUSCO for owners who want better performance and reliability from their RX8. If you are looking for rx8 ram air intake for sale in Brisbane (QLD), Sydney (NSW), Melbourne (VIC), Canberra (ACT), Adelaide (SA), Darwin (NT) or Perth (WA), you’ll find high-quality Japanese Bracing upgrades at RX8 Upgrades.

Frequently Asked Questions

Will this CUSCO rear strut brace fit my Series 2 RX8?

The CUSCO Type OS rear strut brace is specified for Series 2 RX8 models from 2009 to 2012. It mounts to the rear suspension towers using the factory mounting points.

Do I need to drill or modify the body to install this RX8 rear strut brace?

No. The CUSCO Type OS rear strut brace is a direct bolt-on design that uses factory mounting points, so no body modification is required.

What does a rear strut brace change on an RX8?

The CUSCO Type OS rear strut brace reinforces the rear suspension towers to help reduce chassis flex in loaded corners and direction changes. This supports more consistent suspension geometry and a more predictable rear response.

What is the CUSCO Type OS rear brace made from?

The CUSCO Type OS rear strut brace uses an oval-section aluminium bar. This provides rigidity while avoiding excessive weight.

Will the rear strut brace be visible inside the RX8?

Yes. The CUSCO Type OS rear strut brace has CUSCO blue end plates, giving the rear cabin area a purposeful visible finish.

Can I fit this rear brace with a CUSCO front strut brace?

Yes. The CUSCO Type OS rear strut brace can be paired with a CUSCO Type OS front strut brace to provide support at both ends of the RX8 chassis.