Tamiya 1/14 Radius Arm Upgrade TRU058 by GPM  [TRU058]

Precision alloy radius arm upgrade for 1/14 Tamiya trucks

This TRU058 radius arm set uses precision-engineered alloy construction to replace the factory plastic arms on 1/14 scale Tamiya tractor trucks, providing a sturdier mounting point for rear suspension links and reduced flex under load.

The 2pcs set includes collars, lock nuts and mounting screws as listed in the product title. Components are sized to interface with the truck's original mounting points for a direct aftermarket swap that prioritises chassis stiffness and repeatable geometry.

Installation guidance for technicians: inspect bearings and pivot sleeves for wear before assembly, remove original arms with care, carry over required spacers, fit the alloy arms using the supplied collars and lock nuts, and apply controlled torque to fasteners to avoid thread damage. Confirm alignment on the bench and verify after a short dynamic test.

From a tuning perspective, TRU058 helps maintain consistent rear axle geometry during acceleration and braking, yielding a firmer suspension response and more stable gear mesh under load.

TRU058 is a direct-fit alloy upgrade aimed at improving rear linkage stiffness and maintaining consistent suspension geometry for tuning and running.