Model JR-M502-LB is an aluminium rear suspension arm designed for RC use on Tamiya M-05, M-06 and MF-01X chassis. It provides a direct-fit replacement where mounting holes align and is intended to offer greater stiffness and longevity than standard plastic units.
Confirm your chassis code before buying because compatibility is limited to the listed models. Installation uses the same mounting pattern as stock: remove the factory arm, check hinge-pin and pivot clearance, then refit using original hardware. After fitting, review rear toe and camber to keep your setup within target ranges.
In tuning terms the aluminium arm tightens rear response by reducing component flex; this can alter handling feel and may need minor setup tweaks. The light blue finish is purely cosmetic and does not modify interface geometry.
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