MP10 Steering Servo Horn for SANWA/KO 18.5mm Splines - Kyosho IFW610C  [KY-IFW610C]

IFW610C Aluminum Horn Overview

This Kyosho IFW610C aluminum steering servo horn is an RC-scale replacement part designed to mate with splined servos and form a solid mechanical link between the servo and steering linkage on 1/10 touring platforms such as the MP10.

Compatibility follows the product naming: it fits servos using 18.5mm splined outputs in SANWA and KO patterns, so verify your servo spline pattern before fitting. The horn supplies a direct mounting point to set steering throw, centring and end point behaviour through the linkage geometry rather than by changing electronic settings.

Installation is straightforward for experienced model builders: remove the stock horn from the servo spline, align the IFW610C to the servo output splines, and secure with the original servo saver or retaining screw. Where applicable, check for correct spline engagement and minimal play, and use the vehicle's stock linkages or adjustable turnbuckles to re-establish tie-rod length and toe settings. Use appropriate hex driver sizes and avoid over-torquing small fasteners to prevent stripping.

Tuning notes: swapping to a rigid aluminum horn can reduce flex at the linkage interface, which helps maintain consistent steering ratios under load and allows finer mechanical adjustment of end points and steering sensitivity. Expect the hardware to influence feel through mechanical feedback rather than altering electronic servo behaviour, and confirm there is no binding throughout full suspension travel.