Yokomo SD-200BA Servo Saver Posts for MR-4 Series Aluminum Struts  [SD-200BA]

Servo saver posts for MR-4 series

The Yokomo SD-200BA is a replacement servo saver post kit designed for the MR-4 series servo saver assembly on scale RC drift cars. The set uses blue anodized aluminum struts that reduce flex compared with standard plastic parts, and it includes matching knurled nuts plus a servo saver spring to retain the original damping function.

Fit and role: these posts mount where the servo saver attaches to the steering assembly and are intended to provide a more rigid attachment point while preserving the servo saver’s protective travel. That rigidity helps maintain consistent steering response during drift setups where steering feel and repeatability matter.

Installation and tuning notes: swap the original posts for the SD-200BA struts, ensure threaded engagement is secure, and use the knurled nuts to lock position without over-torquing. The included spring remains responsible for limiting shock to the servo, so check that free travel and centering are unchanged after fitting. For tuning, small changes to servo saver preload or spring seating can alter steering return and damping; make adjustments incrementally and test on track.