This component is a 123mm steel front and rear swing shaft for the HPI Savage 21 platform, referenced as SSAV11123. The part comes as 1 pr and is intended to replace the factory swing shafts where the suspension links meet the driveline.
Steel offers greater wear resistance than softer materials, so this shaft is a practical choice for maintenance or swapping out a worn factory shaft on Savage 21 models. Always double-check the shaft length and mounting arrangement before fitting.
As the pivot between suspension arms and drivetrain, shaft condition alters steering behaviour and structural durability rather than changing electronic or motor performance. Inspect associated pins and bearings when you fit the shaft and confirm smooth travel through the suspension range.
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