The XRAY 372021 Composite Front Upper Arm Mount - Left is tailored for X10 and X12 chassis to improve stability on high-grip tracks and when ambient temperatures climb. The hard composite resists flex so steering inputs remain consistent lap after lap.
Clear "L" and "H" markings make side and height selection straightforward during setup. The stiffer composite increases chassis consistency; combine with the right mount 372011 for even response across the axle.
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