Yokomo YOKSD414KB - King Pin Ball Stud for MR-4TC SD/BD  [YOKSD414KB]

King pin ball stud for MR-4TC

This Yokomo YOKSD414KB king pin ball stud is an R/C-scale replacement part intended for MR-4TC SD and BD chassis models. It functions as the ball end for king pin fittings in the front steering assembly, offering a direct replacement option where the original ball stud is worn or when a geometry change is required for tuning.

Installation is straightforward for those familiar with 1/10 touring car front hubs: remove the hub or king pin retaining hardware, replace the worn stud with the new unit, and verify smooth articulation of the steering linkage without binding. Use appropriate thread engagement and confirm any retaining hardware is secure but not over-torqued to avoid stripping small threads.

As a tuning component, the ball stud affects steering feel and roll centre when used as part of chosen king pin or camber link configurations. Small changes in ball location or ball size can alter steering response and bump steer characteristics, so make incremental changes and test on-track to assess handling differences. Regular checks for wear and lubrication of the ball/socket interface will extend service life and maintain consistent steering feedback.