For hobbyists who bash or fine-tune setups, the Yokomo Y4-8BA 13.5mm Shock Cap Ball Set gives a robust upgrade for YD-2 and YD-4 dampers. The four aluminium cap balls are made to keep shocks moving freely even when installation nuts are tightened firmly.
Crushed or deformed cap balls are a common cause of binding. These aluminium replacements resist that damage, helping your shocks preserve smooth articulation and repeatable damping from run to run.
The Y4-8BA cap balls match the common shock layouts on YD-2 and YD-4 models, providing a straightforward swap for drivers wanting tougher hardware without modifying shock geometry.
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