This is a graphite lower brace designed for 1/10 scale formula cars, specified for use with the YR-10F chassis. The part acts as a lower chassis reinforcement to alter chassis flex characteristics and help fine-tune handling on smooth circuit layouts common to formula-style RC racing.
Installation is straightforward for users familiar with YR-10F service: remove the stock lower brace, position the YR-04 in place of the original brace, and secure it using the existing mounting points and hardware. No additional fabrication is required when fitting to a standard YR-10F chassis.
Tuning role: adding a stiffer or lighter lower brace changes the chassis roll and pitch response; the graphite YR-04 is intended to provide a predictable increase in lateral stiffness without changing suspension geometry. Use this part as one element among spring, damper, and anti-roll adjustments when chasing balance on high-grip surfaces.
Compatible chassis: YR-10F only. Designed specifically to match the standard mounting layout of the YR-10F 1/10 formula platform.
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