XRAY X4F'25 Rear Deck Hard Graphite 2.5 for Setup Tuning - Factory Pro O-XCP023H  [FP-O-XCP023H]

Hard rear upper deck for XRAY X4F'25

This hard rear upper deck is designed specifically for the XRAY X4F'25 and supplied by Factory Pro as O-XCP023H. The graphite 2.5 material produces a stiffer rear section to help control chassis flex and sharpen handling on track.

Functionally, the upgrade alters torsional stiffness at the back of the chassis, which influences entry and mid-corner behaviour. Fitting a stiffer rear deck is a common setup route to reduce unwanted movement during high-load turns or acceleration, delivering a firmer rear response while keeping the rest of the car unchanged.

Installation: the deck drops into the standard X4F'25 screw points and uses the existing mounting holes, so no chassis cutting or drilling is required. Replace any damaged screws or worn threads, and torque fasteners evenly to maintain consistent preload. After installation, check for any interference with the motor, gearbox, or suspension arcs.

Setup advice: once fitted, tune in small steps to rear spring, damper and anti-roll settings rather than big jumps. Watch tyre wear and behaviour across several runs to determine whether additional changes to toe or damping are needed.