HPI Savage 21 Shock Replacement Spring Steel with Delrin SAVSP by GPM  [SAVSP]

Steel coil and Delrin seating upgrade for Savage 21

This aftermarket spring fits HPI Savage 21 shock assemblies and is supplied as 1 pr for direct replacement. The component pairs a steel coil with Delrin seats to provide a robust spring element suited to RC shock rebuilds and setup adjustments.

It is designed exclusively for model-scale suspension work and is intended for hobbyists replacing worn stock springs or trying a different mechanical response during tuning. It is not for use on full-size vehicles.

Installation follows normal shock service steps: strip the shock, swap springs and retainers, then reassemble. During service, check for worn retainers or bearings and replace any hardware showing damage.