The Factory Pro FP-O-XCP023H Xray X4F'25 Upper Deck Rear Hard is manufactured from quality graphite to strengthen the chassis backbone. The result is crisper rear response and more repeatable corner exits for competitive day racing.
At 2.5mm thickness graphite keeps weight low while providing meaningful rigidity gains. That balance helps preserve turn-in agility while tightening the car's behaviour under load.
Installation is straightforward for anyone familiar with the Xray X4F platform. The upper deck lines up with the factory mounting points to minimise setup changes after fitting.
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