The Factory Pro O-XCP016 is a rear narrow split upper deck crafted from Graphite 2.0 as an aftermarket part for the Xray X4 chassis. It provides a different rear top-deck stiffness so you can tweak chassis balance and rear-end grip without adjusting suspension geometry.
Installation follows the X4 stock pattern so experienced builders can swap it in using standard hex keys and workshop tools. Always check the condition of existing screws and ensure proper thread engagement when tightening to avoid movement during running.
In practical setup terms this deck is another tuning variable: changing top-deck material shifts load paths under acceleration, braking and cornering. Combine this change with spring and damper tweaks to dial in rear traction for local track surfaces.
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