This is an RC-scale front lower A-arm spring engineered for the Yokomo R12/GT series and optimised for carpeted surfaces. The component replaces the stock front lower arm spring in the R12/GT front suspension and provides a spring profile aimed at carpet track response.
Compatibility is limited to the R12/GT series, and the spring carries the model designation R12-10S1 as a direct-fit replacement for the stock front lower A-arm spring. Installation requires removing the front lower arm assembly, swapping the spring element, and reassembling the suspension to its original geometry.
From a setup perspective this spring alters front-end compliance and turn-in behaviour on carpet layouts. Fit it when you want to change front grip and steering feel, and make small incremental adjustments while testing to gauge handling differences.
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