Yokomo Z4-303TA Top Shaft for YZ-4 Hard Anodized Aluminum Top Link Shaft  [Z4-303TA]

Top Shaft for YZ-4

This is a scale RC top shaft intended for the YZ-4 4WD off-road chassis. The part functions as the upper suspension link spindle, positioned to anchor the top of the suspension arm and transmit alignment changes through the top link assembly.

Material processing is hard anodized aluminum to resist wear from link movement and to provide a stable mounting surface for bearings or link hardware. The design focus is on consistent linkage behavior and predictable tuning response rather than cosmetic features.

Installation notes: replace the existing top shaft with care to preserve thread engagement and bearing seating; verify fit to the YZ-4 chassis points and confirm clearance with adjacent components before final fastening. Use standard RC maintenance practice when removing or refitting the part.