TRF421X D Suspension Arms Pair - Tamiya 51766  [51766]

TRF421X D-type lower arms (pair)

This replacement hop-up comprises two TRF421X D suspension arms molded in carbon reinforced nylon. The components follow the D-type lower arm geometry used across TRF421-series touring car chassis and serve as a direct swap for worn items or as an upgrade from the standard TRF421 kit arms.

The carbon reinforced nylon blend is selected to balance controlled flex with sufficient strength, helping to keep suspension response predictable on hot days and high-traction carpet surfaces. These arms are intended to provide improved mid-corner stability and a firmer arm characteristic compared with standard molded nylon arms.

Fitting is straightforward on compatible chassis: remove the factory D arms and install these replacements in the original mounting positions, checking left and right orientation and ensuring suspension links and pins move freely after installation. No extra hardware is required beyond the original mounting parts supplied with the chassis.