YR-X12 Aftermarket Aluminum Chassis Plate - YX-02A by Yokomo  [YX-02A]

Low-centre main chassis for sharper handling on YR-X12

This aluminum main chassis serves as an aftermarket replacement mainplate for the YR-X12 1/12 competition platform. It is produced to the specified duralumin grade and aims to alter stiffness and lower mass without affecting the car's suspension layout or electronics.

The chassis is a 2.0mm thick 70-75 duralumin plate. The reduced profile supports small-diameter tyre fits and relocates weight lower in the assembly, which helps curb roll and reduces the tendency to high-side on carpet surfaces.

Machining has been applied to preserve load paths while tuning roll and pitch response. The practical effect is a calmer steering feel at the limit and a more stable base for tyre and damper tuning.

Install as a direct-fit replacement to YR-X12 mounting points; verify fastener positions and clearances before final tightening. Apply this modification as part of gradual setup updates rather than as a single comprehensive change.

As a targeted tuning component, this plate is designed to stabilise turn-in and reduce sudden steering spikes on high-grip carpet; combine it with suspension and tyre tweaks to reach the handling you want.