Sale

Chassis Components Chassis and Frame Components

AutoExe

Floor Cross Bar

$249.99 $153.02 Save $96.97

SKU: MSE450

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The AutoExe Floor Cross Bar is a performance-oriented reinforcement part designed to significantly enhance the chassis rigidity of your Mazda RX-8 SE3P. By connecting the floor from left to right, this bar helps to reduce flex and improve the car's overall handling characteristics. It is constructed from a high-strength steel crossbar and features a two-piece, two-point system for effective reinforcement. This cross bar is a direct replacement for the genuine part, weighing in at 5.5Kg compared to the original's 7.6Kg, contributing to a lighter vehicle. The installation process involves interior cutouts and is estimated to take approximately 0.8 hours of reference work time. While it fits perfectly, including on ABS-equipped cars, it is noted that interior notch processing is required for proper installation. This AutoExe Floor Cross Bar is compatible with the 2003-2012 Mazda RX-8 SE3P models. Buyers have noted that it can also give a nice increase in induction sound, which is an unexpected bonus.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAutoExe
Part NumberMSE450
CategoryChassis Components

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy