The Yokomo B9-S2BA Shock Shaft Guide is a compact upgrade for BD9 chassis runners seeking firmer, more consistent shock action. By holding the shock shaft true to its axis, it reduces side load and helps the damper work as intended across varied track conditions. It is suitable for racers tuning responsiveness and feedback.
This guide is compatible with a number of MRTC variants including MRTC-BD919, MRTC-BD919S, MRTC-BD10FF, MRTC-BD11-1, MSR-BD11, MRTC-BD11US, and MRTC-BD11A-1. It is a recommended swap when restoring precise damping after long service intervals.
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