Racers looking to refine front-end behaviour on the Xray X4 can use the Factory Pro FP-O-XCP013 Front Upper Deck Brace Set to vary chassis rigidity. The pack comes with one 1mm and one 2mm brace so you can assess how different stiffness levels affect lap times and handling balance.
Designed for the Xray X4 chassis, the thinner 1mm brace adds measured flex for improved bite on rough surfaces, while the 2mm brace increases front-end stiffness for crisper turn-in and steadier line holding on smoother circuits.
These Factory Pro braces bolt into the original Xray X4 points for quick fitting, reducing bench time before practice or a race. Once installed they provide predictable changes so you can tune other setup items accordingly.
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