This aluminum rear upper suspension arm is a red anodized RC-scale replacement part intended for use on TAMIYA TL-01, GF-01 and WR-02 platforms. It serves as a direct-fit option to the original rear upper arm mounting points on those chassis families and is offered as a tuning component rather than a structural redesign.
As an alloy component, the arm is intended to reduce flex compared with common plastic arms and to provide a more consistent pivot surface during cornering and acceleration. Fitment assumes the existing chassis layout and hardware are retained, so users can swap the arm into the stock locations without modifying the main chassis or suspension tower geometry.
Practical tuning notes: replacing plastic rear upper arms with aluminum typically changes the rear-end feel, making the axle response crisper; drivers should check toe, camber and shock settings after installation and consider incremental adjustments to rebound or spring rates to restore the balance they prefer. This product is for RC-scale use only and is not intended for any real vehicle application.
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