This Factory Pro O-XCP023 upper deck is an RC-grade graphite 2.0 rear plate made for the XRAY X4F'25 chassis. It replaces the standard rear deck to influence rear stiffness and help refine the car's balance as part of setup tuning.
As a tuning component, the graphite 2.0 plate alters rear response to weight transfer and lateral loads; racers commonly fit it to reduce rear flex and improve traction consistency on medium to high grip asphalt. Proper fitment depends on matching bulkhead mount points and screw holes, so confirm alignment and drivetrain clearance before final torqueing.
Fitting notes: remove the OEM deck, retain or upgrade fasteners as appropriate, check screw lengths to avoid interference with moving parts, and tighten bolts progressively and evenly to preserve chassis flatness. After fitting, check wheel toe and droop to ensure the suspension operates freely.
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