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

Tie the floor area together with a cross bar that reduces flex, improving chassis rigidity, steering response, and the way the car reacts to mid-corner bumps.

$400

The AUTOEXE Floor Cross Bar is a cleverly engineered cabin reinforcement for Mazda RX8 Series 1 & Series 2 models (2003–2012), using existing mounting points to significantly increase chassis stiffness through the rear floor without sacrificing boot usability.

  • Connects the left and right sides of the rear floor to reduce flex through the cabin structure
  • Delivers a rigidity effect similar to a tower or harness bar while remaining discreet
  • Maintains full boot usability and practicality, with no major intrusion into cargo space
  • Bolts into high-strength seat mounting positions for a secure, structurally sound installation

You will feel a more solid, cohesive chassis with less twist over bumps and through corners, making the RX8 (2003–2012) feel more stable, responsive and refined at speed.

For best results, combine this Floor Cross Bar with the AUTOEXE Strut Tower Bar and other rigidity upgrades like the CUSCO Rear Strut Brace Type OS for a well-balanced chassis package.

Additional information

RX8 Model

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SKU AE-FCB-S1S2 Category Types , Brand:

Related RX8 Upgrades

This floor cross bar brace is one of the best Mazda RX-8 upgrades you can make to your Series 1 (2003-2008) or Series 2 (2009-2012). Chassis cross brace are among the top Aftermarket mods you can buy from AUTOEXE for owners who want better performance and reliability from their RX8. If you are looking for floor cross brace 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.