Tamiya DF-03 Rear Suspension Arm Set DF03RA-05 by 3Racing  [DF03RA-05]

Aluminium rear arms for DF-03 tuning

The DF03RA-05 rear aluminium suspension arms are a machined hop-up that replace the standard rear arms on the Tamiya DF-03 chassis. They create a firmer mounting location for suspension linkages, allowing finer control during setup without altering the chassis mounting arrangement.

As a tuning upgrade rather than an absolute performance claim, aluminium construction increases rigidity over common injection-moulded arms and so influences how the rear end reacts to spring and damper settings. This can lead to more repeatable setup results.

Fitment notes: the arms are intended for the DF-03 rear suspension points and use the chassis' original mounting pins and hardware. No specialist tools are normally needed; confirm freedom of movement and correct fit before final tightening.

Maintenance and setup: periodically inspect pivot bores and mounting fasteners for wear or slack, and select shock lengths and spring rates that suit the stiffer rear mounting to tune balance.

A straightforward hop-up aimed at builders who prefer a stiffer rear mounting platform for consistent suspension setup on Tamiya DF-03 models.