The Factory Pro O-XCP016 rear narrow split upper deck is an aftermarket piece made from Graphite 2.0 for use on the Xray X4 chassis. It offers an alternative rear top-deck stiffness so racers can fine tune rear traction and chassis balance without altering suspension geometry.
Installation is a direct fit at the rear upper deck location and uses the original mounting points on the X4. Standard hex drivers and workshop tools are all that are needed; inspect screw threads and fasteners when refitting to make sure the deck is mounted securely.
Use this deck as part of a stepwise tuning process: changes to the top-deck affect how load is shared during acceleration, cornering and braking. Combine deck swaps with controlled adjustments to springs, dampers and anti-roll bars to achieve the handling you want.
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