This RC upper A arm mount fits Yokomo R12 and GT series vehicles. Molded from graphite resin, it is harder than the original factory piece and helps to tighten steering tracing and improve turn-in response while keeping the original geometry intact.
Fitment and role: the mount replaces the stock locating point for the upper arm on the front suspension and is compatible with the existing suspension links and uprights on R12 and GT chassis. As a chassis-level tuning part, it stiffens the upper arm joint area so steering inputs are less affected by local flex, resulting in steadier transient steering response.
Installation notes: intended to replace the factory upper arm mount directly. Basic front suspension disassembly is needed for installation, and standard hex drivers for your chassis are sufficient. After installation, verify alignment and steering freeplay to ensure the expected steering behavior change.
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