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

Front upper arm support for YR-10F

This is a graphite front upper arm support intended for 1/10 scale formula cars, built to fit the YR-10F chassis. As an RC-scale accessory, it serves as a direct replacement or upgrade for the standard plastic part, offering a stiffer mounting point that affects suspension behaviour and steering feedback.

The part installs at the front upper arm pivot area and works with existing arm pins and hardware on YR-10F layouts. Installation typically requires standard teardown of the front suspension to access the upper arm mounts, a clean fit check, and verifying free movement through the travel after reassembly.

In setup terms, using a graphite upper arm support shifts local stiffness at the upper link, which can reduce flex under load and sharpen initial steering response. It is commonly used by drivers who want more consistent suspension geometry during cornering and improved predictability when adjusting camber or roll centre via arm positioning.