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

Rear narrow split deck overview

This Factory Pro replacement upper deck is an RC-scale rear upper deck designed for the Xray X4 Series chassis, supplied in a Graphite 2.0 layup to alter local stiffness for rear-end setup work. The component is aimed at tuners who refine chassis balance and tyre bite by changing rear upper deck stiffness and load distribution, rather than being a simple stock swap.

Fitment and role: the plate occupies the rear upper deck position on X4 Series layouts and acts as a tuning element for rear chassis rigidity. Fitting it changes how the rear suspension and chassis react during cornering and drive, enabling small setup shifts without modifying suspension geometry.

Installation notes: fit using the original X4 rear upper deck mounting points, check alignment with existing holes and clearances before torquing hardware, and reuse the stock fastener pattern. Keep bolts snug and recheck after the first running session to confirm alignment has not shifted and handling remains consistent.

Tuning guidance: use the Graphite 2.0 deck to raise localized rear stiffness for circuits requiring steadier high-speed behaviour or to fine-tune rotation by mixing different material decks front to rear. Expect changes at chassis flex and response level rather than direct alterations to individual suspension components.