The SSAV12110 swing shaft fits the HPI Savage 21 as a front and rear universal swing shaft. It is manufactured in steel in the wide 5mm size and shipped as a one-pair set that includes the adaptor, pins and washers needed for installation.
In operation this shaft replaces the original swing shaft where a wider 5mm driveline is required. It is meant as a direct service replacement to restore correct coupling and to support routine maintenance or modest tuning that targets driveline reliability.
Installation overview: install the shaft into the existing hub and suspension assemblies using the supplied adaptor, pins and washers. Check hub geometry and pin alignment as you reassemble to ensure correct driveline engagement; if you use different hex widths or aftermarket hubs, confirm the fit before final tightening.
Use this pair when worn swing shafts need replacing or when matching a 5mm wide driveline on HPI Savage 21 builds; verify alignment and pin seating during installation and after a short test run.
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