This front outer hinge pin fits the YD-4 chassis and is supplied by Yokomo as a replacement part. It is the outer pivot pin for the front suspension arm and is intended for model-scale upkeep and setup work.
After installing the pin, re-evaluate suspension geometry and arm alignment, and secure it with the original clip or retainer. Regularly inspect the lower arm outer pivot for wear, since this component impacts lateral play and handling precision.
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