The XRAY 342043 Aluminum Upper Arm Holder Left is tailored for the RX8.3 line and improves steering precision and cornering control. Made from Swiss 7075 T6 aluminum, this part balances strength with light weight for consistent handling during aggressive laps.
This upper arm holder integrates with XRAY's revised aluminum bulkheads and uses a front upper clamp single-screw plus two radio plate screws to support the Multi-Flex system. Adjusting the radio plate fasteners lets drivers fine-tune flex characteristics and steering response to match track grip.
The holder enables the upper arms to sit further back, increasing caster and enhancing cornering speed and stability. That extra caster helps maintain control in tight turns and at higher exit speeds on varied surfaces.
A straightforward upgrade for racers aiming to sharpen steering feel and cornering performance, the XRAY 342043 Aluminum Upper Arm Holder Left fits directly into an RX8.3 setup.
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