Yokomo YR-10F Graphite Front Upper Arm Support - YR-10US  [YR-10US]

YR-10F Front Upper Arm Support Overview

This graphite front upper arm support is made for 1/10 scale formula cars and is built to fit the YR-10F chassis. It replaces the factory plastic piece to provide a firmer mounting point that alters suspension behavior and enhances steering feedback.

The component fits at the front upper arm pivot and uses the stock arm pins and hardware on YR-10F layouts. Installation normally requires removing the front suspension to access the upper arm mounts, confirming a clean fit, and checking for free movement through the full travel after reassembly.

From a setup perspective, adding a graphite support increases local stiffness at the upper link, which helps reduce flex under load and produces a crisper initial steering reaction. Many drivers install it to stabilise suspension geometry during cornering and to make camber or roll center adjustments more predictable.