HPI Savage 21 front/rear wide 5mm universal swing shaft by GPM SSAV12110  [SSAV12110]

Technical overview

This GPM SSAV12110 swing shaft is an RC-scale front and rear universal swing shaft produced for the HPI Savage 21 platform. The part is steel, specified as the wide 5mm version, and is supplied as a one-pair set with the adaptor, pins, and washers needed for fitment.

In practical terms this shaft replaces the stock swing shaft in Savage 21 drivetrains where the wider 5mm configuration is required. It is intended to serve as a direct replacement part to restore proper coupling and to support routine maintenance or modest tuning that focuses on drivetrain reliability rather than performance claims.

Installation overview: the shaft is fitted into the existing hub and suspension assemblies using the included adaptor, pins, and washers. Check existing hub geometry and pin alignment during reassembly to ensure correct driveline engagement; if you use upgraded hubs or different-width hexes, verify fit before final tightening.

Use this set when replacing worn swing shafts or when matching a 5mm wide driveline requirement on HPI Savage 21 builds; verify alignment during installation and inspect pins and washers for secure fit.