The Factory Pro FP-O-XCP023H Xray X4F'25 Upper Deck Rear Hard is crafted from high-grade graphite to strengthen the rear chassis area. The upgrade aims to reduce unwanted flex and deliver a more predictable rear end during hard cornering.
Using 2.5mm graphite keeps the assembly lightweight while adding stiffness where it matters most. That combination helps maintain corner speed and improves driver confidence on flowing tracks.
Installation is designed to be simple for users of the Xray X4F 2025 platform. After mounting, minor setup changes to shock tune or anti-roll balance can help you get the best from the stiffer deck.
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