This Factory Pro option part is a narrow split upper deck front designed specifically for the XRAY X4 chassis, offered as an RC‑scale graphite 2.0 replacement component. Its role is to change front-end stiffness and distribution of structural stiffness across the top of the chassis to support setup changes without modifying the stock lower plate.
Fitment and installation use the X4's existing mounting points and orientation for the front upper deck; the part is provided as a direct chassis component intended to be fitted in place of the original front upper deck. When installing, verify alignment with servo and suspension link clearances, and re‑check wheel toe and steering geometry after final tightening.
Tuning purpose: using a narrower split upper deck front alters chassis flex characteristics ahead of the centerline, which can affect initial turn-in and mid-corner stability. Swap this graphite piece when you need a measurable change in front-end response during track tuning, then evaluate lap times and tyre wear to judge net gain.
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