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

Price:
CAD$17.31
Brand:
Factory Pro
Model:
FP-O-TCP003
Condition:
Brand New
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Split upper deck upgrade for TRF421

This Factory Pro O-TCP003 accessory is a split upper deck built to fit the Tamiya TRF421 chassis. The component uses a 2mm graphite plate in a softer layup so you can influence chassis flex and mid-corner behavior without altering the core chassis layout.

As a precision tuning piece, the split upper deck changes how front and rear sections share load under cornering. Racers fit it to refine understeer and oversteer balance and to smooth transient response when changing direction. The softer graphite introduces measured compliance while preserving mounting geometry and track alignment.

Fitting is straightforward for anyone comfortable with touring car service: remove the stock upper deck, move any needed fasteners, and bolt the split deck to the factory screw locations. Verify servo, motor and suspension clearances and alignment before final tightening to prevent binding or unwanted contact.

Compatibility

  • Tamiya TRF421 chassis

How will a softer 2mm graphite plate change handling?

A softer layup adds controlled flex through the mid-section, which can increase corner bite and soften transitions. It tends to reduce sudden snap from one direction to another while keeping geometry unchanged.

Will I need to modify screw holes when installing?

Usually no. The part is formed to match stock mounting points, but always check hole alignment and that servo horns, motor and shock towers clear the new deck before final assembly.

Should I change suspension or toe after fitting?

Expect to review roll centre, shock length and toe settings after installation, as the added compliance can shift handling balance. Small shock or anti-roll adjustments often restore preferred behaviour.

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