The Factory Pro O-XCP023 rear upper deck is an RC-grade graphite 2.0 plate built for the XRAY X4F'25 chassis. It replaces the stock rear deck to influence chassis rear stiffness and overall balance while remaining an aftermarket tuning part.
Fitted as a setup option, the graphite 2.0 plate changes rear behaviour during weight transfer and cornering, commonly used to reduce rear flex and help maintain traction on medium to high grip asphalt. Ensure the plate lines up with existing bulkheads and screw holes and check suspension and drivetrain clearance before final tightening.
Fitment advice: remove the OEM deck and either reuse or upgrade the fasteners, inspect screw lengths to avoid interference with moving parts, and torque screws evenly to protect chassis flatness. After installing, recheck wheel toe and droop so the car runs free without binding.
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