Upper Deck Plate Compatible with Drift Chassis - Yokomo SD-003M  [SD-003M]

Replacement graphite plate for chassis stiffness tuning

This SD-003M upper deck from Yokomo is a graphite upper plate intended for 1/10-scale drift RC use. It functions as the structural top member between the front and rear towers, affecting chassis torsion, roll response, and overall balance during drift setups. As an RC-scale accessory the part is described only in the context of model chassis tuning and replacement.

To fit the deck, remove the existing top plate fasteners and test-fit the SD-003M to verify mounting hole alignment and tower clearance. If the original screws reach correctly and the deck sits flush, re-use them; otherwise choose appropriate screw lengths to avoid bottoming out or interference. Make sure servo linkages, ESC wires, and body mounts remain free from contact before final tightening.

As a tuning item the graphite deck tends to stiffen the chassis top versus thinner plastic plates, producing a firmer initial turn-in and less chassis twist under load. Builders use deck stiffness as part of an overall tuning strategy: increasing stiffness shifts load distribution and sharpens handling, while softer decks can smooth transitions and help maintain traction. Run controlled tests and tweak incrementally to match driving style and track conditions.