This is a 123mm steel front/rear swing shaft intended for the HPI Savage 21 platform, identified by model SSAV11123. The part is supplied as 1 pr and replaces the original swing shafts that couple the suspension pivots to the drivetrain.
The steel material provides greater wear resistance than softer alternatives, so it is suitable for routine servicing and replacing worn shafts on Savage 21 vehicles. Ensure the shaft length and mounting arrangement match your chassis before fitting.
The swing shaft acts as the pivot and load path between suspension arms and the drivetrain, so shaft condition impacts steering accuracy and component longevity rather than electronic performance. Inspect mating pins and bearings during installation and confirm smooth movement across the suspension travel.
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