Upgrade your HPI Savage 21 with GPM steel shafts built for the Sav13170 damper to increase resistance to wear and bending. These shafts help the shock maintain consistent damping under load and extend the interval between rebuilds. They are an effective, low-fuss improvement for modelers focused on reliability and predictable handling.
HPI Savage 21 Steel Shaft For Sav13170 Damper - 1pr - GPM SAV13170/SH
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