Upgrade the fragile resin upper arm to the Yokomo Y2-P08FUIA Aluminum Front Upper I-Arm to increase long term durability. The aluminium replacement is engineered to strengthen the front assembly while keeping weight down.
Adjust caster over a 7mm span by repositioning the spacer, giving you a practical range for trimming steering balance during setup sessions.
The machined aluminium design reduces flex but remains light enough to preserve nimble handling characteristics, improving front-end feedback under load.
When fitting the aluminium arm in place of the resin version, use the D-155 series upper I arm rod end adapter to ensure correct alignment. This part is made to pair cleanly with YD-2 chassis geometry for a direct replacement.
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