TRF421X Fine-Tune 14mm Weight 2.5g Tamiya 3451593  [3451593]

Fine balance weight for TRF421X

The Tamiya 3451593 is a 14mm hop-up weight weighing 2.5g, suitable for the TRF421X touring chassis. It is designed to provide small, deliberate changes in mass distribution on 1/10 touring cars to assist with setup work.

Fitment is intended for the TRF421X-specific hop-up points, so double-check the 3451593 part code against your chassis documentation before fitting. This item is a tuning accessory and not a replacement for mechanical upgrades to suspension or drive components.

To fit, remove the factory weight or existing hop-up from the TRF421X mounting area and install this 14mm weight using the original fasteners. Confirm fastener security and run a short shakedown to assess the change.

Use the 2.5g increment to influence entry balance or mid-corner behavior depending on mounting location; employ methodical testing and setup logs to capture how small mass shifts affect lap performance.