The Yokomo S4-S813A aluminium shock caps are designed to give SO2.0 and MO2.0 chassis a firmer top mount and steadier damping behaviour. They are a direct-fit option for builders focused on consistent control and longevity.
Machined aluminium construction offers a more rigid mounting point compared with standard caps, and the Yokomo S4-S813A supports finer damping adjustment. The result is improved stability when tuning for different track surfaces.
These caps include a drain screw to speed up shock servicing and make bleeding simpler. The better sealing helps prevent fluid loss so damping stays predictable during extended running.
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