Xray X4 Series Graphite 2.0 Rear Upper Deck Narrow Split - Factory Pro O-XCP028  [FP-O-XCP028]

Narrow split rear upper deck information

The Factory Pro replacement rear upper deck is designed for Xray X4 Series chassis and is produced in a Graphite 2.0 form to adjust local stiffness at the rear. The part targets drivers who tune chassis balance and tyre bite by changing the rear upper deck stiffness and load paths instead of swapping common components.

Fitment and role: this plate takes the rear upper deck location on X4 Series layouts and works as a tuning item to influence rear chassis rigidity. Once installed it alters how the rear suspension and chassis respond under cornering and acceleration, permitting fine setup changes without altering suspension geometry.

Installation notes: use the original X4 rear deck mounting points for installation, confirm hole alignment and clearance prior to final torquing, and follow the stock hardware pattern. Tighten fasteners to a snug fit and recheck after initial running to ensure nothing has shifted and handling remains predictable.

Tuning guidance: fit the Graphite 2.0 deck to lift local rear stiffness for circuits that demand more high-speed stability, or to refine rotation by pairing with different front deck materials. Expect changes at the chassis flex level rather than direct tweaks to individual suspension pieces.