TRF421X Damper Stay Mount 3451584 for 42391 Tamiya  [3451584]

TRF421X shock stay replacement

This is an RC damper stay offered as part number 3451584 from Tamiya, specified for the 42391 TRF421X chassis. The part functions as the attachment point for the shocks and is intended to replace the original stay on compatible TRF421X builds.

By setting shock mounting points and angles the damper stay allows you to change leverage and suspension geometry without replacing arms or shock towers. During setup work it is used to explore different shock angles and mounting heights to tune transient response and roll characteristics on 1/10 scale touring car platforms.

Installation is typical for TRF421X kits: remove the existing stay, move across any spacers or bushings you require, and secure the replacement using the chassis' existing screw positions. No chassis modification is needed with the intended TRF421X parts, but verify alignment and thread engagement as you reassemble.

Use this stay when you want a practical, reversible method to alter shock geometry on TRF421X cars while keeping focus on suspension tuning rather than major component changes.