This connector and 1.4mm wire damper spring are supplied as a replacement assembly for HPI Savage 21 shock units, with a nominal 113mm free length. The item is presented as a functional linker and spring element for direct replacement or basic tune adjustments.
Installation suits hobbyists accustomed to Savage 21 servicing: the connector replaces the linkage interface and the spring fits into compatible shock bodies. Verify the shock shaft and retainer match before finishing the install, and recheck suspension travel and preload after assembly to ensure correct behaviour on your model.
When tuning, swapping this spring changes the stack stiffness and influences damping characteristics. It is helpful for tweaking ride height, rebound feel, or renewing worn spring components on everyday or competitive Savage 21 rigs.
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