This component is the graphite upper deck produced for the YZ-4 4WD off-road scale car, supplied as Yokomo part number Z4-003. Fitted as a top-plate replacement, it provides a straightforward tuning option to change chassis top-side stiffness and handling without modifying suspension or drivetrain parts.
Fabricated from graphite, the deck is intended for RC-scale tuning: drivers use it to influence chassis flex, turn-in and mid-corner balance. Because this is an accessory for the YZ-4 family, confirm your specific chassis code before fitting to ensure compatibility.
Installation notes: the upper deck mounts using the vehicle's existing upper-deck interfaces. When installing, check alignment with the B-YZ4 mounting points, confirm or reuse appropriate hardware from the seller, and make incremental setup checks to evaluate handling changes.
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