Tamiya TRF421X Upper Deck Graphite 2mm by Factory Pro O-TCP010  [FP-O-TCP010]

Upper deck for TRF421X

This upper deck is an aftermarket replacement plate designed for the Tamiya TRF421X chassis, supplied by Factory Pro as O-TCP010. It is an RC-scale component intended to alter the structural stiffness of the chassis where the upper deck integrates with the main frame.

As a 2mm graphite plate, the part changes torsional response compared with stock material; that effect is used to tune handling balance and mid-corner support. Fitment is intended specifically for the TRF421X layout and uses the chassis' existing mounting points.

Installation notes: this deck typically installs with the original chassis fasteners and alignment features. Verify screw lengths and clearances during assembly, check for interference with surrounding components such as the suspension towers and servo mounts, and re-check baseline setup after fitting to evaluate handling changes.

Use this upper deck as a tuning option to adjust chassis rigidity for on-track setups, evaluating changes in conjunction with suspension and ride-height settings.