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ODULA Member Collar Set for Mazda RX8 (Series 1 & 2, 2003-2012)

Aluminium locating collars that remove factory mounting clearance, making the RX8 feel quieter, smoother and more tied together over bumps.

RX8 member collars in red and silver aluminium arranged in two rows

$190

Mazda RX8 member collars are aluminium locating collars that fill the factory clearance between the subframe mounting bolts and the chassis. This ODULA collar kit targets the member-to-body interface directly, removing the micro-movement that makes an unmodified RX8 feel vague and unsettled on rough roads.

It is the logical first step in a staged chassis build, establishing a stable foundation before any bracing is added.

Mazda RX8 Member Collars Key Features

  • Aluminium construction gives each collar the rigidity to fill mounting clearance without adding meaningful weight to the chassis.
  • Filling the bolt-to-member gap reduces micro-movement. The result is a car that feels quieter and smoother over rough surfaces, rather than simply stiffer.
  • These subframe locating collars belong early in a staged build. Removing play here gives any subsequent bracing a more stable platform to work from, which is why Josh places them before upper or lower bracing.
  • Installation uses the existing mounting points, so no new holes or chassis modifications are required.
  • Finally, this RX8 aluminium collar set suits every Mazda RX8 built from 2003 to 2012, covering both Series 1 and Series 2 without variation.

For RX8 enthusiasts building the chassis progressively, the Mazda RX8 member collars are the right place to start. With mounting clearance addressed, the car feels less nervous and more cohesive. That settled baseline also makes it easier to judge the genuine contribution of each brace added afterwards. Learn more about the manufacturer at the ODULA official site.

The CUSCO Strut Brace Type OS (Front) with Brake Cylinder Stopper is the ideal companion here. Front upper bracing delivers the clearest turn-in gain once subframe movement is already resolved by the collars. The AUTOEXE Lower Arm Bar (Front) adds a further layer of lower front-end control, completing the front chassis package for owners who want the full benefit of both upper and lower reinforcement.

Additional information

RX8 Model

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Colour

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SKU OD-MCS-S1S2 Categories , Types , , Brand:

Related RX8 Upgrades

This member collar set is one of the best Mazda RX-8 upgrades you can make to your Mazda Rx8 Series 1 Parts Australia or Series 2 (2009-2012). Member collar upgrades are among the top Aftermarket mods you can buy from ODULA for owners who want better performance and reliability from their RX8. If you are looking for rx8 member collars 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

What do member collars actually do on an RX8?

Member collars are aluminium locating collars that fill the factory clearance between the subframe mounting bolts and the chassis. By eliminating that gap, they remove micro-movement at the member-to-body interface, which makes the chassis feel quieter over bumps and more cohesive as a whole rather than simply stiffer.

Will these fit both Series 1 and Series 2 RX8 models?

Yes. The ODULA member collar set fits all Mazda RX8 models from 2003 to 2012, covering both the Series 1 and Series 2 generations.

Do I need to drill new holes or modify the chassis to fit these?

No modifications are required. The collars fit directly to the existing subframe mounting points, so installation involves no new holes or chassis alterations.

Why fit member collars before adding bracing?

Removing play at the subframe mounting points gives any bracing a more stable platform to work from. Fitting collars first means braces act on a chassis that already has its baseline movement addressed, so each subsequent upgrade delivers a clearer and more accurate improvement.

What will I notice once the member collars are fitted?

Owners typically describe the car as feeling calmer and more settled, particularly over rough or uneven surfaces. The chassis sounds and feels quieter through joints, and the whole car has a more tied-together quality without a harsher ride.

What chassis upgrades work well alongside these collars?

A front upper strut brace is the natural next step once subframe movement is resolved, delivering a noticeable turn-in gain on top of the settled foundation the collars create. A front lower arm bar then completes the front chassis package by adding a further layer of lower front-end control.

What material are the ODULA member collars made from?

The collars are machined from aluminium, which gives them the rigidity needed to take up clearance at the mounting points without adding meaningful weight to the chassis.