This is an aluminium front upper A-arm mount built for 1/12 scale on-road race cars, intended exclusively for the right side. It replaces the original upper mount to stiffen the front suspension mounting without changing factory suspension geometry.
Compatibility is confined to the stated YR-X12 variants; use the existing screw holes and supplied mounting points during installation. No modifications to servo positions or electronics are necessary for correct fitment.
In practice this mount lowers upper-arm flex, resulting in steadier steering inputs and a more predictable front-end response while testing camber and roll-centre settings on 1/12 on-road rigs.
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