The Factory Pro O-XCP032S is an aftermarket rear upper deck produced for the Xray X4'26 chassis, precision cut from graphite at a nominal 1.6 mm thickness. It replaces the stock upper deck to change how stiffness is distributed through the rear section and to keep suspension pick-up points aligned under load. Fitted in the same footprint as the factory part, it is used by tuners balancing rear traction and roll response.
Graphite at this thickness offers a middle ground: more control than thin carbon but less brittleness than heavy composites. That balance helps with both lateral and longitudinal stiffness without becoming overly fragile in minor incidents. The plate follows the X4'26 machining pattern so mounting accuracy and repeatability are preserved.
Made specifically for the Xray X4'26, the O-XCP032S uses the existing mounting holes and replaces the factory rear upper deck. As an aftermarket structural plate it affects rear traction transition and roll behaviour by altering the link between the rear bulkhead and centre rails.
This component is aimed at hobbyists and competitors restoring or refining an Xray X4'26 who require a dimensionally accurate graphite option. It is ideal for those focused on assembly consistency and precise chassis geometry rather than broad handling fixes.
Consider this part as a precise tuning element that alters stiffness distribution and part-to-part repeatability. Check fasteners and mating surfaces during installation and use it alongside damper and anti-roll adjustments to dial rear behaviour.
Factory Pro O-XCP032S is a focused graphite rear upper deck for the Xray X4'26 that provides a controlled material change to help fine-tune rear chassis behaviour while keeping factory fit points.
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