The Kyosho XGS021 Big Bore Shock Spring is tailored for the ULTIMA Series SC6 and provides a consistent medium-hard spring feel that supports predictable handling. The red coating is easy to spot in the pit area and is built to withstand routine running and setup changes.
Designed for enthusiasts who dial in suspension settings, this spring lets you alter chassis balance without changing shock bodies. It installs directly into compatible big bore shock cartridges used on ULTIMA SC6 platforms.
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