Tamiya TRF421 Split Upper Deck Medium Graphite 2mm by Factory Pro O-TCP004  [FP-O-TCP004]

Split upper deck for TRF421

This Factory Pro part is a split upper deck made for the Tamiya TRF421 touring car chassis. It is an RC-scale replacement top plate in graphite at a 2mm thickness, intended to serve as a direct-fit component for chassis layout and setup changes.

The medium split layout lets builders adjust local stiffness and fore-aft mass distribution without altering lower chassis pieces. When swapped in, it becomes part of the chassis stack that influences flex characteristics used during setup iterations for grip and handling balance on track.

Installation is straightforward for experienced kit builders: remove the existing upper deck, transfer any spacers or mounting hardware, and fasten the split panels to the factory mounting points. Check alignment at the bulkheads and ensure screw torque is consistent to avoid unwanted preload on the chassis.