This carbon upper plate reinforces the rear lower suspension arm on GT/Xb8 scale cars, intended for RC use only. When paired with a lower carbon stiffener it increases lateral and torsional rigidity of the lower arm assembly, reducing unwanted flex under high load.
By limiting unwanted movement in the lower arm, the upgrade helps the rear maintain contact through turns and gives drivers a more consistent traction window. It is targeted at setups on medium to high-traction circuits where extra stiffness translates to faster corner exits.
Installation follows normal rear suspension service procedures; fit using the arm's existing mounting points and confirm fastener engagement and torque values. Expect to tweak suspension geometry post-install to fine-tune balance.
This plate is a focused upgrade for racers who want to stiffen the lower arm to improve entry and mid-corner behaviour without large-scale chassis changes.
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