Kyosho Compatible 23T Aluminium Servo Arm KM023TM by GPM  [KM023TM]

Stiffer 23T Aluminium Servo Arm for Kyosho Bikes

This aluminium servo arm is an RC-scale replacement part made for Kyosho motorcycle models that use the 23T (C9) spline interface. Machined aluminium offers greater rigidity than stock plastic horns and gives a firmer connection between the servo output and the control linkage on scale motorcycles.

Fitment relies on the 23T (C9) spline pattern, so check your servo spline before fitting. Installation is straightforward: remove the stock horn, align the 23T spline to the servo output, secure with the original retaining screw, then attach the linkage. Use the original hardware and apply moderate torque to avoid stripping the spline.

In setup terms, an aluminium arm reduces flex under load which helps keep steering and throttle inputs consistent during runs. It is useful when you need a sharper control feel or repeatable linkage geometry, for example when trimming steering centering or throttle return. Be aware that increased stiffness can pass more load to the servo, so ensure your servo torque rating suits the application.