This option upper deck is designed for the Tamiya TRF421 on-road racing chassis. The component is a 2mm graphite plate that replaces the factory upper deck and mounts to the TRF421 upper-deck points.
The graphite deck is a tuning device to alter chassis flex and front/rear balance. Compared with softer stock plates, it raises local stiffness and produces predictable handling changes useful when refining setup.
Installation uses the stock TRF421 mounting layout and aligns with original mounting holes and fasteners. When installing, confirm screw engagement and check clearances around the servo, battery, and suspension before completing assembly.
The 2mm graphite upper deck is a simple and effective tuning option for TRF421 cars to refine stiffness and handling without altering the suspension geometry.
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