This Factory Pro option part replaces the front upper deck on the XRAY X4 chassis with a narrow split design made in graphite 2.0. Its purpose is to vary front structural stiffness and redistribute load across the top of the chassis to enable setup experiments while leaving the stock lower plate intact.
Installation follows the X4's existing mounting layout and the part mounts as a direct swap for the OEM front upper deck. When fitting, confirm servo horn and suspension link clearances, torque screws progressively and recheck wheel toe and steering geometry once everything is tightened.
Setup guidance: narrowing the split upper deck alters chassis flex ahead of the centreline and can influence initial turn-in and mid-corner balance. Fit this graphite piece when chasing a distinct change in front-end behaviour, then compare lap consistency and tyre degradation to evaluate gains.
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