This optional left-side front upper A-arm holder is made for the YD-4 series and supplied by Yokomo as model Y4-302UHL. The component is CNC machined from aluminium and finished in black alumite, with chamfered edges to limit sharp contact areas during fitting.
When installed at the upper A-arm attachment point the holder enhances mounting precision and boosts the structural rigidity of the upper arm assembly, which in turn refines steering behaviour and improves the suspension linkage's overall response. The chamfered profile also improves fitment and reduces interference while servicing or adjusting linkages.
It is particularly useful for drivers seeking a tougher, more consistent feel from their YD-4 suspension during extended running and setup sessions.
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