The XRAY 342042 Aluminum Upper Arm Holder Left is a strong, precision component for drivers refining front-end behaviour. Manufactured from Swiss 7075 T6 aluminium, it installs alongside XRAY's new aluminium bulkheads to provide a reliable mounting point for upper arms.
This part mounts to the front upper clamp with one screw and to the radio plate with two screws, a straightforward arrangement that also allows you to modify chassis flex. Removing a radio plate screw increases flex and can soften or sharpen steering as required for track conditions.
As part of XRAY's Multi-Flex approach, relocating the upper arms rearward raises caster angle, which contributes to stronger turn-in and greater stability through fast bends when set up correctly.
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