The XRAY 354255 carbon center mounting rear brace is an RC-scale top deck element engineered to work with the aluminum center upper brace mounting plate #354290 to alter rear chassis flex. Manufactured from machined carbon fiber, the part is intended to provide a controlled reduction in rear stiffness that can increase rear traction and deliver more consistent handling where extra chassis compliance is needed.
Installation is performed at the chassis centerline where the brace mounts to the existing center upper plate; when fitted alongside the specified aluminum plate the combined stack changes the torsional response of the rear section. This product is aimed at drivers seeking a measurable tuning option to soften rear chassis behavior on lower-traction surfaces without adding weight penalties common to bulkier alternatives.
From a tuning perspective, the brace adjusts the balance between chassis twist and suspension movement: softer rear chassis flex tends to allow the rear tires to follow uneven surfaces more effectively, improving rear bite during corner exit and helping maintain consistent lap-to-lap feel. Use this part as one element in a wider tuning plan, combining shock, tyre, and swaybar adjustments as required by track conditions.
Use the XRAY 354255 when you need a deliberate shift toward a more compliant rear end; pair it with the #354290 aluminum center upper brace for the described effect and evaluate incremental changes on track to find the desired balance.
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