Xray X4 Narrow Split Upper Deck Rear Graphite by Factory Pro O-XCP016  [FP-O-XCP016]

This Factory Pro option part is a rear narrow split upper deck engineered as an RC-scale accessory for the Xray X4 chassis, produced in Graphite 2.0 material. It is intended to provide a different rear top-deck stiffness profile compared with standard parts, giving tuners a way to alter chassis balance and rear traction behavior without changing suspension geometry.

Fitment and installation are straightforward for builders familiar with X4 maintenance: the part is intended to replace the stock rear upper deck position on X4 chassis and to use the existing fastener pattern. Typical workshop tools such as hex drivers are sufficient for removal and installation; check existing hardware condition and thread engagement when refitting to ensure secure mounting.

In setup terms this deck acts as a chassis stiffness tuning option for rear-end behavior. Moving to a different upper deck material or layout can shift how the chassis distributes load under acceleration, braking, and cornering. Use this part as one element among spring, damper, and anti-roll bar changes when refining handling for track conditions or driver preference.