Exterior Components› Body Panels and Components

Rustbuster Frameworks

Rust Buster 4Runner & FJ Cruiser Rear Body Frame Mount

$74.99

SKU: R027 RB8431

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Non-Returnable Item

Description

Part #: RB8431

MIA's Description

The Rust Buster RB8431 is a rear body frame mount designed for specific Toyota and Lexus models. It is constructed from heavy-duty 11-gauge steel and manufactured to OE specifications as a direct replacement. This mount attaches at the end of the frame rail and requires welding for installation.

It is laser cut and CNC bent for precise fitment. The RB8431 comes with an oil protective coating to prevent oxidation during transit and is backed by a lifetime warranty.

Fitment

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

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Specifications

BrandRustbuster Frameworks
Part NumberR027 RB8431

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.

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