The S4-118PA graphite battery plate is produced as a replacement mount for the YZ-4S chassis. It is intended to accept the typical pack formats employed with the platform and is listed as compatible with the B-YZ4SF option.
Fabricated from a single graphite slab, the plate increases chassis rigidity when compared to ordinary plastic mounts and provides a stable mounting plane for the battery. That increased rigidity assists in making weight distribution adjustments more repeatable during setup.
Installation involves removing the original battery holder, aligning the graphite plate to the chassis mounting points, and securing it with the factory screws. Standard hex tools are sufficient; ensure the plate is correctly aligned before final tightening to prevent stressing the fasteners.
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