The Yokomo YOKZC206C 3mm collar is a compact aluminium spacer designed for general R/C use, helping to establish reliable axial distances between bearings, gears and rotating parts to minimise side play.
Installation is straightforward: position the collar where axial spacing is required, then rely on the model's existing screws or retaining hardware to hold adjacent components. The part is a spacer only and does not act as a primary fastener.
Use this collar to fine-tune gear mesh and bearing preload in controlled steps, making it easier to compare setups without resorting to shim stacks or custom machining.
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