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

Product Details and Fitment

This Kyosho IFW610C aluminum steering servo horn is intended as a replacement part to interface with splined servos and to provide a direct mechanical link between the servo and steering linkage on 1/10 touring vehicles such as the MP10.

Fitment follows the product designation and covers servos with 18.5mm splined outputs in SANWA and KO patterns. Confirm your servo spline type before installation. The horn's function is mechanical: it provides a mounting point used to adjust steering throw, centring and end points through linkage geometry rather than through radio programming.

To install, remove the stock horn, align the IFW610C onto the servo output splines, and secure using the original servo saver or retaining screw. Ensure full spline engagement and minimal axial play. Reinstall stock linkages or adjustable turnbuckles to set tie-rod length and toe, and use the correct hex driver sizes to prevent stripping small fasteners.

Tuning considerations: installing a rigid aluminum horn reduces flex where the linkage meets the servo, helping maintain steering ratios under load and allowing finer mechanical adjustment of end points. Expect differences in mechanical feedback rather than changes in servo electronics, and always check for binding through full suspension movement.