This is a scale RC top shaft intended for the YZ-4 4WD off-road chassis. As the upper suspension link spindle it secures the top of the suspension arm and transfers alignment adjustments through the top link assembly.
The component uses hard anodized aluminum to withstand link motion wear and to offer a reliable surface for bearings and link fittings. The focus is on dependable linkage performance and tuning repeatability rather than cosmetic appeal.
For correct installation, remove the original shaft while protecting thread engagement and bearing seating; check the Z4-303TA fit against YZ-4 chassis mounting points and ensure there is no interference with nearby parts before tightening. Follow standard RC maintenance protocols when removing or refitting this part.
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