This graphite lower A arm plate fits the front lower arm area on Yokomo R12-series frames. It provides a swap-in reinforcement to modify the local stiffness of the lower arm joint, letting drivers experiment with handling without replacing arms.
Mount the plate to the chassis' existing lower-arm points for a quick install. The part can be fitted or removed to compare setups, and no permanent alteration to the main arm is required when the lower-arm geometry matches the R12 pattern.
The item is designed as a setup element. Installing the graphite plate increases stiffness around the lower arm pivot, which tightens front response and affects weight transfer; removing it returns the original dynamics. Use it alongside other setup tweaks for stepwise tuning on different surfaces.
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