This is an RC-scale upper A arm mount designed for Yokomo R12 and GT series models. The part is molded from graphite resin and is described as harder than the standard factory piece, which helps to sharpen steering tracing and improve turn-in response without changing basic geometry.
Fitment and role: the mount replaces the stock upper arm locating point on the front suspension and works with existing suspension links and uprights on compatible R12 and GT chassis. As a chassis-level tuning option, it increases local rigidity at the upper arm joint so that steering inputs register with less flex in that area, making transient steering feel and tracing more consistent.
Installation notes: this mount is intended to be used in place of the original upper arm mount. Basic disassembly of the front suspension is required to swap the part, and standard hex drivers used for your chassis are sufficient. After installation, check alignment and steering freeplay as part of setup verification to confirm the expected change in steering behaviour.
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