This Yokomo S4-010B63A centre bone is a 63.5mm RC replacement link intended for use with YZ-4S platforms. It provides a straightforward centre drivetrain link for restoring the linkage geometry without altering other driveline components.
Contents: a single item is provided, recorded as 1 pcs in the listing. The component is supplied for direct swap-out where the original centre link requires replacement during standard maintenance.
Fitment considerations: the bone is manufactured to match the factory mounting positions on compatible YZ-4S assemblies, so confirm alignment and secure fasteners when installing. This swap maintains consistent drivetrain geometry rather than changing performance characteristics.
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