Tamiya 3404176 Upper Deck R TRF421 Hop-up Part  [3404176]

Upper Deck R for TRF421X

The Tamiya 3404176 Upper Deck R is a dedicated hop-up component intended for use with the TRF421 series identified by 42391 TRF421X. As an upper deck piece, it occupies the top mounting position on the TRF421 chassis assembly and is intended as a direct replacement or spare part for that mounting area.

This part's role is primarily structural and positional: it secures upper links and offers defined mounting points that factor into chassis geometry and setup. When used as part of a tuning session, the Upper Deck R helps set relative positions of suspension and radio components without altering other chassis elements.

Installation is straightforward for users familiar with TRF-style assemblies: remove the body and any radio gear that blocks access, unfasten the existing upper deck fasteners, swap the component, and torque screws to the original specification. No additional tools or modifications are required beyond standard hex drivers and basic disassembly.

For maintenance and bench work, keep mounting surfaces clean and check screw threads and captive nut positions before final assembly. Retain any original hardware unless a replacement is specified by the vehicle setup you are following.

This Upper Deck R is presented as a service or tuning part for TRF421 series models, useful when restoring original configuration or when adjusting component placement during setup work.