Tamiya TRF421 Graphite Bumper Upper Plate by Factory Pro O-TCP008  [FP-O-TCP008]

Graphite bumper upper plate for TRF421

This Factory Pro FP-O-TCP008 part is an RC-scale bumper upper plate made for the Tamiya TRF421 chassis. The component is produced in graphite and is intended as a direct-fit replacement for the TRF421 bumper upper plate to support chassis tuning tasks.

The plate's role is strictly within RC setup and adjustment: it mounts to the bumper area of the TRF421 chassis and changes local stiffness and load transfer through the front end. Swapping this plate allows model builders to explore differences in chassis rigidity and its effect on shock behaviour and steering feel without altering suspension geometry parts themselves.

Installation is straightforward for experienced model technicians: remove the existing bumper upper plate from the TRF421 mounting points, refit the Factory Pro graphite plate to the same locations, and verify screw engagement and clearance. After installation, check ride height and shock alignment as part of the setup routine, and run short test laps to confirm changes before final tuning.

The description above refers to an RC-scale hop-up for the Tamiya TRF421 only and is not applicable to real vehicles.