Tamiya TRF421 Split Upper Deck 2mm Graphite by Factory Pro O-TCP003  [FP-O-TCP003]

Split upper deck for TRF421

This Factory Pro accessory is a split upper deck designed specifically for the Tamiya TRF421 chassis. The part uses a 2mm graphite plate in a softer layup to influence chassis flex and mid-corner behavior without requiring other chassis modifications.

As an RC-scale tuning component, the split upper deck alters how the front and rear sections of the chassis interact under load. Installers use it to fine-tune understeer/oversteer balance and to adjust transient response during direction changes. The soft graphite helps introduce controlled compliance while keeping overall chassis geometry intact.

Installation is straightforward for users familiar with touring car maintenance: remove the factory upper deck, transfer any required mounting hardware, and fit the split deck to the existing screw points. Check alignment and clearances with servo, motor, and suspension components before final tightening to avoid binding or contact.

Compatibility

• Tamiya TRF421