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

Replacement upper deck for TRF421X chassis

This upper deck is an aftermarket replacement plate made to suit the Tamiya TRF421X chassis, supplied by Factory Pro as O-TCP010. The component is intended to alter structural stiffness where the upper deck joins the main frame and is sold as an upgrade option for on-road setups.

As a 2mm graphite plate, the part shifts the chassis' torsional response relative to stock materials; that change helps tune mid-corner support and overall balance. The plate is cut to match TRF421X geometry and uses the chassis' factory mounting points for fitment.

Installation notes: this deck typically fits using the original chassis fasteners and alignment features. During installation confirm screw lengths, check clearance against suspension towers and servo mounts, and perform a baseline setup check after fitting to judge handling changes.

Fit this upper deck to evaluate chassis rigidity changes and then tune suspension and ride height to suit the new response.