Tamiya 3451584 - Damper Stay Mount for 42391 TRF421X chassis  [3451584]

Damper stay mount for TRF421X

This is an RC-scale damper stay mount sold as part number 3451584 from Tamiya, designated for the 42391 TRF421X chassis. The component serves as the mounting point for the shock absorbers and is intended to replace the original stay on compatible TRF421X builds.

Functionally the damper stay controls shock installation points and relative angle, giving a direct means to adjust leverage and shock geometry without changing the arms or shock towers. In practical setup work the stay is used to experiment with shock angle and mounting height to influence transient response and roll behaviour on 1/10 scale touring car rigs.

Installation is straightforward for typical TRF421X assemblies: remove the original stay, transfer any existing spacers or bushings, then fit the replacement using the chassis' existing screw locations. No chassis modification is required when used with the intended TRF421X parts, but check alignment and thread engagement during reassembly to ensure secure mounting.

Use this stay when you need a direct, parts-level way to alter shock geometry on TRF421X setups, keeping adjustments reversible and focused on suspension tuning rather than major component swaps.